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Peripato V, Levis C, Moreira GA, Gamerman D, Ter Steege H, Pitman NCA, de Souza JG, Iriarte J, Robinson M, Junqueira AB, Trindade TB, de Almeida FO, Moraes CDP, Lombardo U, Tamanaha EK, Maezumi SY, Ometto JPHB, Braga JRG, Campanharo WA, Cassol HLG, Leal PR, de Assis MLR, da Silva AM, Phillips OL, Costa FRC, Flores BM, Hoffman B, Henkel TW, Umaña MN, Magnusson WE, Valderrama Sandoval EH, Barlow J, Milliken W, Lopes MA, Simon MF, van Andel TR, Laurance SGW, Laurance WF, Torres-Lezama A, Assis RL, Molino JF, Mestre M, Hamblin M, Coelho LDS, Lima Filho DDA, Wittmann F, Salomão RP, Amaral IL, Guevara JE, de Almeida Matos FD, Castilho CV, Carim MDJV, Cárdenas López D, Sabatier D, Irume MV, Martins MP, Guimarães JRDS, Bánki OS, Piedade MTF, Ramos JF, Luize BG, Novo EMMDL, Núñez Vargas P, Silva TSF, Venticinque EM, Manzatto AG, Reis NFC, Terborgh J, Casula KR, Demarchi LO, Honorio Coronado EN, Monteagudo Mendoza A, Montero JC, Schöngart J, Feldpausch TR, Quaresma AC, Aymard C GA, Baraloto C, Castaño Arboleda N, Engel J, Petronelli P, Zartman CE, Killeen TJ, Marimon BS, Marimon-Junior BH, Schietti J, Sousa TR, Vasquez R, Rincón LM, Berenguer E, Ferreira J, Mostacedo B, do Amaral DD, Castellanos H, de Medeiros MB, Andrade A, Camargo JL, Farias EDS, Magalhães JLL, Mendonça Nascimento HE, de Queiroz HL, Brienen R, Cardenas Revilla JD, Stevenson PR, Araujo-Murakami A, Barçante Ladvocat Cintra B, Feitosa YO, Barbosa FR, Carpanedo RDS, Duivenvoorden JF, de Noronha JDC, Rodrigues DDJ, Mogollón HF, Ferreira LV, Householder JE, Lozada JR, Comiskey JA, Draper FC, de Toledo JJ, Damasco G, Dávila N, García-Villacorta R, Lopes A, Cornejo Valverde F, Alonso A, Dallmeier F, Gomes VHF, Jimenez EM, Neill D, Peñuela Mora MC, de Aguiar DPP, Arroyo L, Antunes Carvalho F, Coelho de Souza F, Feeley KJ, Gribel R, Pansonato MP, Ríos Paredes M, Brasil da Silva I, Ferreira MJ, Fine PVA, Fonty É, Guedes MC, Licona JC, Pennington T, Peres CA, Villa Zegarra BE, Parada GA, Pardo Molina G, Vos VA, Cerón C, Maas P, Silveira M, Stropp J, Thomas R, Baker TR, Daly D, Huamantupa-Chuquimaco I, Vieira ICG, Weiss Albuquerque B, Fuentes A, Klitgaard B, Marcelo-Peña JL, Silman MR, Tello JS, Vriesendorp C, Chave J, Di Fiore A, Hilário RR, Phillips JF, Rivas-Torres G, von Hildebrand P, Pereira LDO, Barbosa EM, de Matos Bonates LC, Doza HPD, Zárate Gómez R, Gallardo Gonzales GP, Gonzales T, Malhi Y, de Andrade Miranda IP, Mozombite Pinto LF, Prieto A, Rudas A, Ruschel AR, Silva N, Vela CIA, Zent EL, Zent S, Cano A, Carrero Márquez YA, Correa DF, Costa JBP, Galbraith D, Holmgren M, Kalamandeen M, Lobo G, Nascimento MT, Oliveira AA, Ramirez-Angulo H, Rocha M, Scudeller VV, Sierra R, Tirado M, van der Heijden G, Vilanova Torre E, Ahuite Reategui MA, Baider C, Balslev H, Cárdenas S, Casas LF, Farfan-Rios W, Ferreira C, Linares-Palomino R, Mendoza C, Mesones I, Urrego Giraldo LE, Villarroel D, Zagt R, Alexiades MN, de Oliveira EA, Garcia-Cabrera K, Hernandez L, Palacios Cuenca W, Pansini S, Pauletto D, Ramirez Arevalo F, Sampaio AF, Valenzuela Gamarra L, Aragão LEOC. More than 10,000 pre-Columbian earthworks are still hidden throughout Amazonia. Science 2023; 382:103-109. [PMID: 37797008 DOI: 10.1126/science.ade2541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 08/31/2023] [Indexed: 10/07/2023]
Abstract
Indigenous societies are known to have occupied the Amazon basin for more than 12,000 years, but the scale of their influence on Amazonian forests remains uncertain. We report the discovery, using LIDAR (light detection and ranging) information from across the basin, of 24 previously undetected pre-Columbian earthworks beneath the forest canopy. Modeled distribution and abundance of large-scale archaeological sites across Amazonia suggest that between 10,272 and 23,648 sites remain to be discovered and that most will be found in the southwest. We also identified 53 domesticated tree species significantly associated with earthwork occurrence probability, likely suggesting past management practices. Closed-canopy forests across Amazonia are likely to contain thousands of undiscovered archaeological sites around which pre-Columbian societies actively modified forests, a discovery that opens opportunities for better understanding the magnitude of ancient human influence on Amazonia and its current state.
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Affiliation(s)
- Vinicius Peripato
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Carolina Levis
- Postgraduate Program in Ecology, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Guido A Moreira
- Centre of Molecular and Environmental Biology, Universidade do Minho, Braga, Portugal
| | - Dani Gamerman
- Departamento de Métodos Estatísticos, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Hans Ter Steege
- Naturalis Biodiversity Center, Leiden, Netherlands
- Quantitative Biodiversity Dynamics, Utrecht University, Utrecht, Netherlands
| | | | - Jonas G de Souza
- Department of Humanities, Universitat Pompeu Fabra, Barcelona, Spain
| | - José Iriarte
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - Mark Robinson
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - André Braga Junqueira
- Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Thiago B Trindade
- Instituto do Património Histórico e Artístico Nacional (IPHAN), Centro Nacional de Arqueologia (CNA), Brasília, DF, Brazil
| | - Fernando O de Almeida
- Departamento de Arqueologia, Universidade Federal de Sergipe (UFS), Laranjeiras, SE, Brazil
| | - Claide de Paula Moraes
- Programa de Antropologia e Arqueologia, Universidade Federal do Oeste do Pará (UFOPA), Santarém, PA, Brazil
| | | | | | - Shira Y Maezumi
- Department of Archaeology, Max Planck Institute of Geoanthropology, Jena, Germany
| | - Jean P H B Ometto
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - José R G Braga
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Wesley A Campanharo
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Henrique L G Cassol
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Philipe R Leal
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Mauro L R de Assis
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Adriana M da Silva
- Postgraduate Program in Geography, Institute of Geography, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Flávia R C Costa
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Bernardo Monteiro Flores
- Postgraduate Program in Ecology, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | | | - Terry W Henkel
- Department of Biological Sciences, Humboldt State University, Arcata, CA, USA
| | - Maria Natalia Umaña
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA
| | - William E Magnusson
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Elvis H Valderrama Sandoval
- Department of Biology, University of Missouri, St. Louis, MO, USA
- Facultad de Biologia, Universidad Nacional de la Amazonia Peruana, Iquitos, Loreto, Peru
| | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster, Lancashire, UK
| | - William Milliken
- Department for Ecosystem Stewardship, Royal Botanic Gardens, Richmond, Surrey, UK
| | - Maria Aparecida Lopes
- Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Marcelo Fragomeni Simon
- Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Prédio da Botânica e Ecologia, Brasilia, DF, Brazil
| | - Tinde R van Andel
- Naturalis Biodiversity Center, Leiden, Netherlands
- Biosystematics Group, Wageningen University, Wageningen, Netherlands
| | - Susan G W Laurance
- Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, QLD, Australia
| | - William F Laurance
- Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, QLD, Australia
| | - Armando Torres-Lezama
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Conjunto Forestal, Mérida, Mérida, Venezuela
| | - Rafael L Assis
- Biodiversity and Ecosystem Services, Instituto Tecnológico Vale, Belém, PA, Brazil
| | | | - Mickaël Mestre
- Institut National de Recherches Archéologiques Préventives, Bègles, France
| | - Michelle Hamblin
- Direction des Affaires Culturelles (DAC Guyane), Cayenne, French Guiana
| | - Luiz de Souza Coelho
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | | | - Florian Wittmann
- Wetland Department, Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Rastatt, Germany
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Rafael P Salomão
- Programa de Pós-Graduação em Ciências Biológicas e Botânica Tropical, Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil
- Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, PA, Brazil
| | - Iêda Leão Amaral
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Juan Ernesto Guevara
- Grupo de Investigación en Biodiversidad, Medio Ambiente y Salud (BIOMAS), Universidad de las Américas, Campus Queri, Quito, Ecuador
| | | | - Carolina V Castilho
- Centro de Pesquisa Agroflorestal de Roraima, Embrapa Roraima, Boa Vista, RR, Brazil
| | | | - Dairon Cárdenas López
- Herbario Amazónico Colombiano, Instituto Amazónico de Investigaciones Científicas (SINCHI), Bogotá, DC, Colombia
| | - Daniel Sabatier
- AMAP, IRD, Cirad, CNRS, INRAE, Université de Montpellier, Montpellier, France
| | - Mariana Victória Irume
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Maria Pires Martins
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | | | - Olaf S Bánki
- Naturalis Biodiversity Center, Leiden, Netherlands
| | - Maria Teresa Fernandez Piedade
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - José Ferreira Ramos
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Bruno Garcia Luize
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Evlyn Márcia Moraes de Leão Novo
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Percy Núñez Vargas
- Herbario Vargas, Universidad Nacional de San Antonio Abad del Cusco (UNSAAC), Cusco, Cusco, Peru
| | | | - Eduardo Martins Venticinque
- Departamento de Ecologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | | | - Neidiane Farias Costa Reis
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil
| | - John Terborgh
- Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, QLD, Australia
- Department of Biology and Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
| | - Katia Regina Casula
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil
| | - Layon O Demarchi
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Euridice N Honorio Coronado
- Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Loreto, Peru
- School of Geography and Sustainable Development, University of St Andrews, St Andrews, UK
| | - Abel Monteagudo Mendoza
- Herbario Vargas, Universidad Nacional de San Antonio Abad del Cusco (UNSAAC), Cusco, Cusco, Peru
- Jardín Botánico de Missouri, Oxapampa, Pasco, Peru
| | - Juan Carlos Montero
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
- Instituto Boliviano de Investigacion Forestal, Santa Cruz, Santa Cruz, Bolivia
| | - Jochen Schöngart
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Ted R Feldpausch
- School of Geography, University of Leeds, Leeds, UK
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Adriano Costa Quaresma
- Wetland Department, Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Rastatt, Germany
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Gerardo A Aymard C
- Programa de Ciencias del Agro y el Mar, Herbario Universitario (PORT), UNELLEZ-Guanare, Guanare, Portuguesa, Venezuela
| | - Chris Baraloto
- International Center for Tropical Botany (ICTB), Department of Biological Sciences, Florida International University, Miami, FL, USA
| | - Nicolás Castaño Arboleda
- Herbario Amazónico Colombiano, Instituto Amazónico de Investigaciones Científicas (SINCHI), Bogotá, DC, Colombia
| | - Julien Engel
- AMAP, IRD, Cirad, CNRS, INRAE, Université de Montpellier, Montpellier, France
- International Center for Tropical Botany (ICTB), Department of Biological Sciences, Florida International University, Miami, FL, USA
| | - Pascal Petronelli
- Paracou research station, UMR EcoFoG Université de Guyane, Campus agronomique, Kourou Cedex, French Guiana
| | - Charles Eugene Zartman
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | | | - Beatriz S Marimon
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso (UNEMAT), Nova Xavantina, MT, Brazil
| | - Ben Hur Marimon-Junior
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso (UNEMAT), Nova Xavantina, MT, Brazil
| | - Juliana Schietti
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Thaiane R Sousa
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | | | - Lorena M Rincón
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Erika Berenguer
- Lancaster Environment Centre, Lancaster University, Lancaster, Lancashire, UK
- Environmental Change Institute, University of Oxford, Oxford, Oxfordshire, UK
| | - Joice Ferreira
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental, Belém, PA, Brazil
| | - Bonifacio Mostacedo
- Facultad de Ciencias Agrícolas, Universidad Autónoma Gabriel René Moreno, Santa Cruz, Santa Cruz, Bolivia
| | | | - Hernán Castellanos
- Centro de Investigaciones Ecológicas de Guayana, Universidad Nacional Experimental de Guayana, Puerto Ordaz, Bolivar, Venezuela
| | - Marcelo Brilhante de Medeiros
- Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Prédio da Botânica e Ecologia, Brasilia, DF, Brazil
| | - Ana Andrade
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - José Luís Camargo
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Emanuelle de Sousa Farias
- Laboratório de Ecologia de Doenças Transmissíveis da Amazônia (EDTA), Instituto Leônidas e Maria Deane (Fiocruz Amazônia), Manaus, AM, Brazil
- Programa de Pós-graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - José Leonardo Lima Magalhães
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental, Belém, PA, Brazil
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | | | - Helder Lima de Queiroz
- Diretoria Técnico-Científica, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, AM, Brazil
| | - Roel Brienen
- School of Geography, University of Leeds, Leeds, UK
| | | | - Pablo R Stevenson
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, DC, Colombia
| | - Alejandro Araujo-Murakami
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
| | | | - Yuri Oliveira Feitosa
- Programa de Pós-Graduação em Botânica, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Flávia Rodrigues Barbosa
- Institute of Natural, Human, and Social Sciences (ICNHS), Federal University of Mato Grosso (UFMT), Sinop, MT, Brazil
| | - Rainiellen de Sá Carpanedo
- Institute of Natural, Human, and Social Sciences (ICNHS), Federal University of Mato Grosso (UFMT), Sinop, MT, Brazil
| | - Joost F Duivenvoorden
- Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands
| | - Janaína da Costa de Noronha
- Institute of Natural, Human, and Social Sciences (ICNHS), Federal University of Mato Grosso (UFMT), Sinop, MT, Brazil
| | - Domingos de Jesus Rodrigues
- Institute of Natural, Human, and Social Sciences (ICNHS), Federal University of Mato Grosso (UFMT), Sinop, MT, Brazil
| | | | | | - John Ethan Householder
- Wetland Department, Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Rastatt, Germany
| | - José Rafael Lozada
- Facultad de Ciencias Forestales y Ambientales, Instituto de Investigaciones para el Desarrollo Forestal, Universidad de los Andes, Mérida, Mérida, Venezuela
| | - James A Comiskey
- Inventory and Monitoring Program, National Park Service, Fredericksburg, VA, USA
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Freddie C Draper
- Department of Geography and Planning, University of Liverpool, Liverpool, UK
| | - José Julio de Toledo
- Departamento de Meio Ambiente e Desenvolvimento, Universidade Federal do Amapá (UNIFAP), Macapá, AP, Brazil
| | - Gabriel Damasco
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Nállarett Dávila
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Roosevelt García-Villacorta
- Programa Restauración de Ecosistemas (PRE), Centro de Innovación Científica Amazónica (CINCIA), Tambopata, Madre de Dios, Peru
- Peruvian Center for Biodiversity and Conservation (PCBC), Iquitos, Loreto, Peru
| | - Aline Lopes
- Department of Ecology, Institute of Biological Sciences, University of Brasilia (UNB), Brasilia, DF, Brazil
| | | | - Alfonso Alonso
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Francisco Dallmeier
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Vitor H F Gomes
- Escola de Negócios Tecnologia e Inovação, Centro Universitário do Pará, Belém, PA, Brazil
- Environmental Science Program, Geosciences Department, Universidade Federal do Pará (UFPA), Belém, PA, Brazil
| | - Eliana M Jimenez
- Grupo de Ecología y Conservación de Fauna y Flora Silvestre, Instituto Amazónico de Investigaciones Imani, Universidad Nacional de Colombia sede Amazonia, Leticia, Amazonas, Colombia
| | - David Neill
- Universidad Estatal Amazónica, Puyo, Pastaza, Ecuador
| | | | - Daniel P P de Aguiar
- Procuradoria-Geral de Justiça, Ministério Público do Estado do Amazonas, Manaus, AM, Brazil
- Coordenação de Dinâmica Ambiental, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Luzmila Arroyo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
| | - Fernanda Antunes Carvalho
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
- Departamento de Genética, Instituto de Ciências Biológicas, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Fernanda Coelho de Souza
- School of Geography, University of Leeds, Leeds, UK
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Kenneth J Feeley
- Department of Biology, University of Miami, Coral Gables, FL, USA
- Fairchild Tropical Botanic Garden, Coral Gables, FL, USA
| | - Rogerio Gribel
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Marcelo Petratti Pansonato
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | | | - Izaias Brasil da Silva
- Postgraduate Program in Biodiversity and Biotechnology Bionorte, Federal University of Acre (UFAC), Rio Branco, AC, Brazil
| | - Maria Julia Ferreira
- Postgraduate Program in Ethnobiology and Nature Conservation, Federal Rural University of Pernambuco (UFRPE), Pernambuco, PB, Brazil
| | - Paul V A Fine
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Émile Fonty
- AMAP, IRD, Cirad, CNRS, INRAE, Université de Montpellier, Montpellier, France
- Direction régionale de la Guyane, Office national des forêts, Cayenne, French Guiana
| | | | - Juan Carlos Licona
- Instituto Boliviano de Investigacion Forestal, Santa Cruz, Santa Cruz, Bolivia
| | - Toby Pennington
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
- Tropical Diversity Section, Royal Botanic Garden Edinburgh, Edinburgh, Scotland, UK
| | - Carlos A Peres
- School of Environmental Sciences, University of East Anglia, Norwich, UK
| | | | - Germaine Alexander Parada
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
| | - Guido Pardo Molina
- Instituto de Investigaciones Forestales de la Amazonía, Universidad Autónoma del Beni José Ballivián, Campus Universitario Final, Riberalta, Beni, Bolivia
| | - Vincent Antoine Vos
- Instituto de Investigaciones Forestales de la Amazonía, Universidad Autónoma del Beni José Ballivián, Campus Universitario Final, Riberalta, Beni, Bolivia
| | - Carlos Cerón
- Escuela de Biología Herbario Alfredo Paredes, Universidad Central, Quito, Pichincha, Ecuador
| | - Paul Maas
- Naturalis Biodiversity Center, Leiden, Netherlands
| | - Marcos Silveira
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre (UFAC), Rio Branco, AC, Brazil
| | - Juliana Stropp
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain
| | - Raquel Thomas
- Iwokrama International Centre for Rain Forest Conservation and Development, Georgetown, Guyana
| | - Tim R Baker
- School of Geography, University of Leeds, Leeds, UK
| | - Doug Daly
- New York Botanical Garden, Bronx, New York, NY, USA
| | - Isau Huamantupa-Chuquimaco
- Herbario HAG, Universidad Nacional Amazónica de Madre de Dios (UNAMAD), Puerto Maldonado, Madre de Dios, Peru
| | | | - Bianca Weiss Albuquerque
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Alfredo Fuentes
- Herbario Nacional de Bolivia, Universitario UMSA, La Paz, La Paz, Bolivia
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St. Louis, MO, USA
| | - Bente Klitgaard
- Department for Accelerated Taxonomy, Royal Botanic Gardens, Richmond, Surrey, UK
| | - José Luis Marcelo-Peña
- Departamento Académico de Ingenieria Forestal y Ambiental, Universidad Nacional de Jaén, Jaén, Cajamarca, Peru
| | - Miles R Silman
- Biology Department and Center for Energy, Environment and Sustainability, Wake Forest University, Winston Salem, NC, USA
| | - J Sebastián Tello
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St. Louis, MO, USA
| | | | - Jerome Chave
- Laboratoire Evolution et Diversité Biologique, Université Paul Sabatier CNRS UMR 5174 EDB, Toulouse, France
| | - Anthony Di Fiore
- Department of Anthropology, University of Texas at Austin, Austin, TX, USA
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito-USFQ, Quito, Pichincha, Ecuador
| | - Renato Richard Hilário
- Departamento de Meio Ambiente e Desenvolvimento, Universidade Federal do Amapá (UNIFAP), Macapá, AP, Brazil
| | | | - Gonzalo Rivas-Torres
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito-USFQ, Quito, Pichincha, Ecuador
- Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, USA
| | | | | | - Edelcilio Marques Barbosa
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | | | | | - Ricardo Zárate Gómez
- PROTERRA, Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Loreto, Peru
| | | | | | - Yadvinder Malhi
- Environmental Change Institute, Oxford University Centre for the Environment, Oxford, England, UK
| | | | | | - Adriana Prieto
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, DC, Colombia
| | - Agustín Rudas
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, DC, Colombia
| | - Ademir R Ruschel
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental, Belém, PA, Brazil
| | - Natalino Silva
- Instituto de Ciência Agrárias, Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil
| | - César I A Vela
- Escuela Profesional de Ingeniería Forestal, Universidad Nacional de San Antonio Abad del Cusco, Puerto Maldonado, Madre de Dios, Peru
| | - Egleé L Zent
- Laboratory of Human Ecology, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, DC, Venezuela
| | - Stanford Zent
- Laboratory of Human Ecology, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, DC, Venezuela
| | - Angela Cano
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, DC, Colombia
- Cambridge University Botanic Garden, Cambridge University, Cambridge, UK
| | | | - Diego F Correa
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, DC, Colombia
- Centre for Biodiversity and Conservation Science (CBCS), The University of Queensland, Brisbane, QLD, Australia
| | | | | | - Milena Holmgren
- Resource Ecology Group, Wageningen University & Research, Wageningen, Gelderland, Netherlands
| | - Michelle Kalamandeen
- School of Earth, Environment and Society, McMaster University, Hamilton, Ontario, Canada
| | - Guilherme Lobo
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Marcelo Trindade Nascimento
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, Brazil
| | - Alexandre A Oliveira
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Hirma Ramirez-Angulo
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Conjunto Forestal, Mérida, Mérida, Venezuela
| | - Maira Rocha
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Veridiana Vizoni Scudeller
- Departamento de Biologia, Instituto de Ciências Biológicas (ICB), Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
| | | | | | | | - Emilio Vilanova Torre
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Conjunto Forestal, Mérida, Mérida, Venezuela
- Wildlife Conservation Society (WCS), New York, NY, USA
| | | | - Cláudia Baider
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
- The Mauritius Herbarium, Agricultural Services, Ministry of Agro-Industry and Food Security, Reduit, Mauritius
| | - Henrik Balslev
- Department of Biology, Aarhus University, Aarhus C, Aarhus, Denmark
| | - Sasha Cárdenas
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, DC, Colombia
| | - Luisa Fernanda Casas
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, DC, Colombia
| | - William Farfan-Rios
- Herbario Vargas, Universidad Nacional de San Antonio Abad del Cusco (UNSAAC), Cusco, Cusco, Peru
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St. Louis, MO, USA
- Living Earth Collaborative, Washington University in St. Louis, St. Louis, MO, USA
| | - Cid Ferreira
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, AM, Brazil
| | - Reynaldo Linares-Palomino
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Casimiro Mendoza
- Escuela de Ciencias Forestales (ESFOR), Universidad Mayor de San Simon (UMSS), Sacta, Cochabamba, Bolivia
- FOMABO, Manejo Forestal en las Tierras Tropicales de Bolivia, Sacta, Cochabamba, Bolivia
| | - Italo Mesones
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | | | - Daniel Villarroel
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
- Fundación Amigos de la Naturaleza (FAN), Santa Cruz, Santa Cruz, Bolivia
| | | | - Miguel N Alexiades
- School of Anthropology and Conservation, University of Kent, Canterbury, Kent, UK
| | - Edmar Almeida de Oliveira
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso (UNEMAT), Nova Xavantina, MT, Brazil
| | - Karina Garcia-Cabrera
- Biology Department and Center for Energy, Environment and Sustainability, Wake Forest University, Winston Salem, NC, USA
| | - Lionel Hernandez
- Centro de Investigaciones Ecológicas de Guayana, Universidad Nacional Experimental de Guayana, Puerto Ordaz, Bolivar, Venezuela
| | | | - Susamar Pansini
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil
| | - Daniela Pauletto
- Instituto de Biodiversidade e Florestas, Universidade Federal do Oeste do Pará (FOPROP), Campus Tapajós, Santarém, PA, Brazil
| | - Fredy Ramirez Arevalo
- Facultad de Biologia, Universidad Nacional de la Amazonia Peruana, Iquitos, Loreto, Peru
| | - Adeilza Felipe Sampaio
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil
| | | | - Luiz E O C Aragão
- Division of Earth Observation and Geoinformatics, General Coordination of Earth Sciences, National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
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2
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Prümers H, Betancourt CJ, Iriarte J, Robinson M, Schaich M. Lidar reveals pre-Hispanic low-density urbanism in the Bolivian Amazon. Nature 2022; 606:325-328. [PMID: 35614221 PMCID: PMC9177426 DOI: 10.1038/s41586-022-04780-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 04/20/2022] [Indexed: 11/25/2022]
Abstract
Archaeological remains of agrarian-based, low-density urbananism1–3 have been reported to exist beneath the tropical forests of Southeast Asia, Sri Lanka and Central America4–6. However, beyond some large interconnected settlements in southern Amazonia7–9, there has been no such evidence for pre-Hispanic Amazonia. Here we present lidar data of sites belonging to the Casarabe culture (around ad 500 to ad 1400)10–13 in the Llanos de Mojos savannah–forest mosaic, southwest Amazonia, revealing the presence of two remarkably large sites (147 ha and 315 ha) in a dense four-tiered settlement system. The Casarabe culture area, as far as known today, spans approximately 4,500 km2, with one of the large settlement sites controlling an area of approximately 500 km2. The civic-ceremonial architecture of these large settlement sites includes stepped platforms, on top of which lie U-shaped structures, rectangular platform mounds and conical pyramids (which are up to 22 m tall). The large settlement sites are surrounded by ranked concentric polygonal banks and represent central nodes that are connected to lower-ranked sites by straight, raised causeways that stretch over several kilometres. Massive water-management infrastructure, composed of canals and reservoirs, complete the settlement system in an anthropogenically modified landscape. Our results indicate that the Casarabe-culture settlement pattern represents a type of tropical low-density urbanism that has not previously been described in Amazonia. Two remarkably large sites in southwest Amazonia, belonging to the Casarabe culture, include complex civic-ceremonial architecture and large water-management infrastructure, representing a type of tropical low-density urbanism that has not previously been described in Amazonia.
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Affiliation(s)
- Heiko Prümers
- Deutsches Archäologisches Institut, Kommission für Archäologie Aussereuropäischer Kulturen, Bonn, Germany.
| | | | - José Iriarte
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - Mark Robinson
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - Martin Schaich
- ArcTron 3D, Surveying Technology & Software Development GmbH, Altenthann, Germany
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3
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Iriarte J, Ziegler MJ, Outram AK, Robinson M, Roberts P, Aceituno FJ, Morcote-Ríos G, Keesey TM. Ice Age megafauna rock art in the Colombian Amazon? Philos Trans R Soc Lond B Biol Sci 2022; 377:20200496. [PMID: 35249392 PMCID: PMC8899627 DOI: 10.1098/rstb.2020.0496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Megafauna paintings have accompanied the earliest archaeological contexts across the continents, revealing a fundamental inter-relationship between early humans and megafauna during the global human expansion as unfamiliar landscapes were humanized and identities built into new territories. However, the identification of extinct megafauna from rock art is controversial. Here, we examine potential megafauna depictions in the rock art of Serranía de la Lindosa, Colombian Amazon, that includes a giant sloth, a gomphothere, a camelid, horses and three-toed ungulates with trunks. We argue that they are Ice Age rock art based on the (i) naturalistic appearance and diagnostic morphological features of the animal images, (ii) late Pleistocene archaeological dates from La Lindosa confirming the contemporaneity of humans and megafauna, (iii) recovery of ochre pigments in late Pleistocene archaeological strata, (iv) the presence of most megafauna identified in the region during the late Pleistocene as attested by archaeological and palaeontological records, and (v) widespread depiction of extinct megafauna in rock art across the Americas. Our findings contribute to the emerging picture of considerable geographical and stylistic variation of geometric and figurative rock art from early human occupations across South America. Lastly, we discuss the implications of our findings for understanding the early human history of tropical South America. This article is part of the theme issue ‘Tropical forests in the deep human past’.
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Affiliation(s)
- José Iriarte
- Department of Archaeology, University of Exeter, Exeter, UK
| | - Michael J Ziegler
- Max Planck Institute for the Science of Human History, Jena, Germany
| | - Alan K Outram
- Department of Archaeology, University of Exeter, Exeter, UK
| | - Mark Robinson
- Department of Archaeology, University of Exeter, Exeter, UK
| | - Patrick Roberts
- Max Planck Institute for the Science of Human History, Jena, Germany
| | | | - Gaspar Morcote-Ríos
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia
| | - T Michael Keesey
- Max Planck Institute for the Science of Human History, Jena, Germany
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4
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Maezumi SY, Elliott S, Robinson M, Betancourt CJ, Gregorio de Souza J, Alves D, Grosvenor M, Hilbert L, Urrego DH, Gosling WD, Iriarte J. Legacies of Indigenous land use and cultural burning in the Bolivian Amazon rainforest ecotone. Philos Trans R Soc Lond B Biol Sci 2022; 377:20200499. [PMID: 35249381 PMCID: PMC8899619 DOI: 10.1098/rstb.2020.0499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The southwestern Amazon Rainforest Ecotone (ARE) is the transitional landscape between the tropical forest and seasonally flooded savannahs of the Bolivian Llanos de Moxos. These heterogeneous landscapes harbour high levels of biodiversity and some of the earliest records of human occupation and plant domestication in Amazonia. While persistent Indigenous legacies have been demonstrated elsewhere in the Amazon, it is unclear how past human-environment interactions may have shaped vegetation composition and structure in the ARE. Here, we examine 6000 years of archaeological and palaeoecological data from Laguna Versalles (LV), Bolivia. LV was dominated by stable rainforest vegetation throughout the Holocene. Maize cultivation and cultural burning are present after ca 5700 cal yr BP. Polyculture cultivation of maize, manioc and leren after ca 3400 cal yr BP predates the formation of Amazonian Dark/Brown Earth (ADE/ABE) soils (approx. 2400 cal yr BP). ADE/ABE formation is associated with agroforestry indicated by increased edible palms, including Mauritia flexuosa and Attalea sp., and record levels of burning, suggesting that fire played an important role in agroforestry practices. The frequent use of fire altered ADE/ABD forest composition and structure by controlling ignitions, decreasing fuel loads and increasing the abundance of plants preferred by humans. Cultural burning and polyculture agroforestry provided a stable subsistence strategy that persisted despite pronounced climate change and cultural transformations and has an enduring legacy in ADE/ABE forests in the ARE. This article is part of the theme issue 'Tropical forests in the deep human past'.
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Affiliation(s)
- S Yoshi Maezumi
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands 1090N
| | - Sarah Elliott
- Department of Archaeology and Anthropology, Bournemouth University, Talbot Campus, Fern Barrow, Poole BH12 5BB, UK
| | - Mark Robinson
- Department of Archaeology, University of Exeter, Exeter EX4 4QE, UK
| | | | | | - Daiana Alves
- Department of Anthropology, Federal University of Pará, Belém, PA-66075-110, Brazil
| | - Mark Grosvenor
- Department of Geography, King's College London, London WC2B 4BG, UK
| | - Lautaro Hilbert
- Laboratório de Arqueologia dos Trópicos, Museu de Arqueologia e Etnologia, Universidade de São Paulo, São Paulo, SP-05508-070, Brazil
| | - Dunia H Urrego
- College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4QE, UK
| | - William D Gosling
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, The Netherlands 1090N
| | - José Iriarte
- Department of Archaeology, University of Exeter, Exeter EX4 4QE, UK
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5
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Lombardo U, Iriarte J, Hilbert L, Ruiz-Pérez J, Capriles JM, Veit H. Early Holocene crop cultivation and landscape modification in Amazonia. Nature 2020; 581:190-193. [PMID: 32404996 PMCID: PMC7250647 DOI: 10.1038/s41586-020-2162-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/13/2020] [Indexed: 11/21/2022]
Abstract
The beginning of plant cultivation is one of the most important cultural
transitions in human history1–4. Based on
molecular markers showing the genetic similarities between domesticated plants
and wild relatives, south-western Amazonia has been proposed as one of the early
centres of plant domestication4–6. However,
the nature of the early human occupation and the history of plant cultivation in
south-western Amazonia are still little understood. Here, we document the
cultivation of Cucurbita at ca. 10,250 cal yr BP,
Manihot at ca. 10,350 cal yr BP and Zea
mays at ca. 6,850 cal yr BP in the Llanos de Moxos. We show that,
starting ca. 10,850 cal yr BP, pre-Columbians created an anthropic landscape
made of approximately 4,700 artificial forest islands within a treeless
seasonally flooded savannah. Our results confirm the Llanos de Moxos as a
hotspot for early plant cultivation and demonstrate that ever since their
arrival, humans have caused a profound alteration of Amazonian landscapes, with
lasting repercussions for habitat heterogeneity and species conservation.
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Affiliation(s)
| | - José Iriarte
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - Lautaro Hilbert
- Laboratório de Arqueologia dos Trópicos, Museu de Arqueologia e Etnologia, Universidade de São Paulo, São Paulo, Brazil
| | - Javier Ruiz-Pérez
- CaSEs - Culture and Socio-Ecological Dynamics Research Group, Pompeu Fabra University, Barcelona, Spain
| | - José M Capriles
- Department of Anthropology, The Pennsylvania State University, University Park, PA, USA.,Instituto de Investigaciones Antropológicas y Arqueológicas, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Heinz Veit
- Institute of Geography, University of Bern, Bern, Switzerland
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6
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Ríos A, López-Navas A, Gutiérrez PR, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Fernández A, De Jesús MT, Lana A, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Carrillo J, Sánchez Á, Alarcón LM, Parrilla P, Ramírez P. What Reasons Lead Spanish Medical Students Not to Be in Favor of Organ Donation? Transplant Proc 2020; 52:443-445. [PMID: 32057503 DOI: 10.1016/j.transproceed.2019.11.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/06/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Despite sensitization of medical students toward the donation of organs, a non-negligible percentage of students are not in favor of donation. OBJECTIVE To analyze the reasons of Spanish medical students who do not have a favorable attitude toward the donation of their own organs after death. METHOD The population under study is medical students in Spanish universities, using the database of the International Donor Collaborative Project, stratified by geographic area and academic year. The questionnaire completion was anonymous and self-administered. The study group is medical students with an unfavorable attitude toward organ donation. The assessment instrument used is a validated questionnaire of attitude toward the donation of organs for transplant, "PCID-DTO-Ríos." The reasons against the donation are valued in the questionnaire through a question. RESULTS Of the participants included in the PCID, students who are not in favor of organ donation were selected (n = 1899). Of them, 8.1% (n = 154) are against and 91.1% (n = 1745) are doubtful. The main reasons indicated are the fear of apparent death in 11.4% of respondents, fear of possible mutilation after donation in 11.1%, and religious reasons in 2.6%. Of those, 6.9% indicate other reasons but do not clearly specify the reasons, using words such as "fear" (2.5%) or "doubts about the process" (4.1%); 66.2% (n = 1257) indicated an "assertive refusal" ("I don't want to express my reasons"). CONCLUSION Twenty percent of Spanish medical students are not in favor of donating their organs and are not in favor of showing their reasons.
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Affiliation(s)
- A Ríos
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain.
| | - A López-Navas
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Psychology, Catholic University of Murcia (UCAM), Murcia, Spain
| | - P R Gutiérrez
- Urology Service (University Hospital Complex of the Canary Islands, CHUC) and Department of Surgery (University of La Laguna, ULL) San Cristóbal de La Laguna, Tenerife, Spain
| | - F J Gómez
- University of Granada, Granada, Spain
| | - J Iriarte
- University of Navarra, Navarra, Spain
| | - R Herruzo
- Autonomous University of Madrid, Madrid, Spain
| | - G Blanco
- BPH Surgery and Liver Transplant Service, Badajoz University Hospital Complex, Infanta Cristina Hospital, Badajoz, Spain
| | - F J Llorca
- University of Cantabria, Santander, Spain
| | - A Asunsolo
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, Universidad de Alcalá Scientific-Technological Campus, Alcalá de Henares, Madrid, Spain
| | - P Sánchez
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - A Fernández
- Department of Basic Biomedical Sciences, Faculty of Biomedical Sciences, Universidad Europea de Madrid, Madrid, Spain
| | | | - A Lana
- Faculty of Medicine and Health Sciences, Area of Preventive Medicine and Public Health, University of Oviedo, Oviedo, Spain
| | - L Fuentes
- Department of Pharmacology and Physiology School of Health and Sports Sciences, University of Zaragoza, Huesca, Spain
| | - J R Hernández
- University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - J Virseda
- University of Castilla La Mancha, Albacete, Spain
| | - J Yelamos
- Endocrinology and Nutrition Service, Virgen de la Arrixaca University Clinical Hospital, El Palmar, Murcia Health Service, Murcia, Spain
| | - J A Bondía
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - J Carrillo
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain
| | - Á Sánchez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain
| | - L Martínez Alarcón
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Parrilla
- Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Ramírez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain
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7
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Ríos A, López-Navas A, Gutiérrez PR, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Fernández A, De Jesús MT, Lana A, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Carrillo J, Sánchez Á, Alarcón LM, Parrilla P, Ramírez P. Are Medical Students of Non-Spanish Nationality Studying in Spain as Sensitized to Transplantation as Those of Spanish Nationality? Transplant Proc 2020; 52:435-438. [PMID: 32057498 DOI: 10.1016/j.transproceed.2019.11.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/06/2019] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Awareness of organ donation among Spanish doctors and medical students is very positive. However, the emerging group of professionals of non-Spanish nationality studying in Spain has not been analyzed. OBJECTIVE To analyze the differences in the attitudes toward the different types of donation among medical students, according to their nationality. METHODS The population under study is medical students in Spanish universities using the database of the International Collaborative Donor Project, stratified by geographic area and academic year. Groups under study include students of non-Spanish nationality as group 1 (n = 1570) and students of Spanish nationality as Group 2 (n = 7705). Instruments are validated questionnaires of attitude toward donation "PCID-DTO-Ríos," "PCID-DVR-Ríos," "PCID-DVH-Ríos," and "PCID-XenoTx-Ríos." RESULTS The attitude toward the donation of own organs after death is similar in both groups (P = .703). Non-Spaniards are 79.2% in favor compared to 79.6% of Spaniards. Living kidney donation, both unrelated (33.3% vs 29.3% in favor; P = .001) and related (91.2% vs 89, 6% in favor; P = .047), is more favorable among non-Spanish students. There are no differences regarding non-related living liver donation (29.7% vs 29.3% in favor; P = .063), but there are differences in the results for related living liver donation (94.1% vs 88%; P < .001). The attitude toward xenotransplantation of organs is similar (80.8% vs 80.8%; P = .999). CONCLUSIONS Awareness of the donation of organs among Spanish medical students is similar to non-Spanish students studying in Spain, except the attitude toward living donation.
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Affiliation(s)
- A Ríos
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain.
| | - A López-Navas
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Psychology, Catholic University of Murcia (UCAM), Murcia, Spain
| | - P R Gutiérrez
- Urology Service (University Hospital Complex of the Canary Islands, CHUC) and Department of Surgery (University of La Laguna, ULL) San Cristóbal de La Laguna, Tenerife, Spain
| | - F J Gómez
- University of Granada, Granada, Spain
| | - J Iriarte
- University of Navarra, Navarra, Spain
| | - R Herruzo
- Autonomous University of Madrid, Madrid, Spain
| | - G Blanco
- BPH Surgery and Liver Transplant Service. Badajoz University Hospital Complex, Infanta Cristina Hospital, Badajoz, Spain
| | - F J Llorca
- University of Cantabria, Santander, Spain
| | - A Asunsolo
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, Universidad de Alcalá Scientific-Technological Campus, Alcalá de Henares, Madrid, Spain
| | - P Sánchez
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - A Fernández
- Department of Basic Biomedical Sciences, Faculty of Biomedical Sciences, Universidad Europea de Madrid, Madrid, Spain
| | | | - A Lana
- Faculty of Medicine and Health Sciences, Area of Preventive Medicine and Public Health, University of Oviedo, Oviedo, Spain
| | - L Fuentes
- Department of Pharmacology and Physiology School of Health and Sports Sciences, University of Zaragoza, Huesca, Spain
| | - J R Hernández
- University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - J Virseda
- University of Castilla La Mancha, Albacete, Spain
| | - J Yelamos
- Endocrinology and Nutrition Service. Virgen de la Arrixaca University Clinical Hospital, El Palmar, Murcia Health Service, Murcia, Spain
| | - J A Bondía
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - J Carrillo
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain
| | - Á Sánchez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain
| | - L Martínez Alarcón
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Parrilla
- Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Ramírez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain
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8
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Ríos A, López-Navas A, Gutiérrez PR, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Fernández A, De Jesús MT, Lana A, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Carrillo J, Sánchez Á, Alarcón LM, Parrilla P, Ramírez P. Information About Donation and Organ Transplantation Among Spanish Medical Students. Transplant Proc 2020; 52:446-448. [PMID: 32057497 DOI: 10.1016/j.transproceed.2019.11.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/06/2019] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Health professionals are asked to promote health, especially organ transplantation; however, they do not always have specific training. OBJECTIVE To analyze information about donation and organ transplantation among Spanish medical students. METHOD The population under study is medical students in Spanish universities using the database of the International Donor Collaborative Project, stratified by geographic area and academic year (n = 9275). The instrument used is the attitude questionnaire for organ donation for "PCID-DTO-Ríos" transplantation, validated with an explained variance of 63.203% and α = 0.834. The Student t test was applied together with the χ2 test, complemented by an analysis of the remainders, and Fisher's exact test was applied. RESULTS Of the students, 74% indicate that they have received information from university professors about organ transplant. Concerning specific issues with the donation, it is notable that only 66.7% (n = 6190) know and accept the concept of brain death as the death of a person. However, only 22% consider themselves as having good information, and 35.3% indicate that their information is scarce or void. Students indicate having received information about transplant from other extra-university sources, such as television and Internet (80.9%), books and magazines (73.2%), and the press (66.9%). From the information obtained in the sociofamilial field, 60.7% have obtained information from the family and 58.1% from friends. Of this information, 9% has been negative from friends, 7.5% from family, 6% from the Internet and television, and 4% from university professors. CONCLUSION Spanish medical students believe they have little information about organ transplantation and have received negative information.
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Affiliation(s)
- A Ríos
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain.
| | - A López-Navas
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Psychology, Catholic University of Murcia (UCAM), Murcia, Spain
| | - P R Gutiérrez
- Urology Service (University Hospital Complex of the Canary Islands, CHUC) and Department of Surgery (University of La Laguna, ULL) San Cristóbal de La Laguna, Tenerife, Spain
| | - F J Gómez
- University of Granada, Granada, Spain
| | - J Iriarte
- University of Navarra, Navarra, Spain
| | - R Herruzo
- Autonomous University of Madrid, Madrid, Spain
| | - G Blanco
- BPH Surgery and Liver Transplant Service, Badajoz University Hospital Complex, Infanta Cristina Hospital, Badajoz, Spain
| | - F J Llorca
- University of Cantabria, Santander, Spain
| | - A Asunsolo
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, Universidad de Alcala Scientific-Technological Campus, Alcala de Henares, Madrid, Spain
| | - P Sánchez
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - A Fernández
- Department of Basic Biomedical Sciences, Faculty of Biomedical Sciences, Universidad Europea de Madrid, Madrid, Spain
| | | | - A Lana
- Faculty of Medicine and Health Sciences, Area of Preventive Medicine and Public Health, University of Oviedo, Oviedo, Spain
| | - L Fuentes
- Department of Pharmacology and Physiology School of Health and Sports Sciences, University of Zaragoza, Huesca, Spain
| | - J R Hernández
- University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - J Virseda
- University of Castilla La Mancha, Albacete, Spain
| | - J Yelamos
- Endocrinology and Nutrition Service. Virgen de la Arrixaca University Clinical Hospital, El Palmar, Murcia Health Service, Murcia, Spain
| | - J A Bondía
- Faculty of Medicine, University of Málaga, Málaga, Spain
| | - J Carrillo
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, University of Murcia, Murcia, Spain
| | - Á Sánchez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain
| | - L Martínez Alarcón
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Parrilla
- Department of Surgery, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain
| | - P Ramírez
- International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB - Virgen de la Arrixaca University Clinical Hospital, Murcia, Spain; Regional Transplant Center, Ministry of Health and Consumer Affairs of the Region of Murcia, Murcia, Spain
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9
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Azevedo V, Stríkis NM, Santos RA, de Souza JG, Ampuero A, Cruz FW, de Oliveira P, Iriarte J, Stumpf CF, Vuille M, Mendes VR, Cheng H, Edwards RL. Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications. Sci Rep 2019; 9:20306. [PMID: 31889126 PMCID: PMC6937329 DOI: 10.1038/s41598-019-56852-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 12/03/2019] [Indexed: 12/02/2022] Open
Abstract
The South American Monsoon System is responsible for the majority of precipitation in the continent, especially over the Amazon and the tropical savannah, known as ‘Cerrado’. Compared to the extensively studied subtropical and temperate regions the effect of the Medieval Climate Anomaly (MCA) on the precipitation over the tropics is still poorly understood. Here, we present a multiproxy paleoprecipitation reconstruction showing a consistent change in the hydrologic regime during the MCA in the eastern Amazon and ‘Cerrado’, characterized by a substantial transition from humid to drier conditions during the Early (925-1150 C.E.) to Late-MCA (1150-1350 C.E.). We compare the timing of major changes in the monsoon precipitation with the expansion and abandonment of settlements reported in the archeological record. Our results show that important cultural successions in the pre-Columbian Central Amazon, the transition from Paredão to Guarita phase, are in agreement with major changes in the hydrologic regime. Phases of expansion and, subsequent abandonment, of large settlements from Paredão during the Early to Late-MCA are coherent with a reduction in water supply. In this context we argue that the sustained drier conditions during the latter period may have triggered territorial disputes with Guarita leading to the Paredão demise.
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Affiliation(s)
- Vitor Azevedo
- Geochemistry Department, Fluminense Federal University, 24020-141, Niterói, Brazil.
| | - Nicolás M Stríkis
- Geochemistry Department, Fluminense Federal University, 24020-141, Niterói, Brazil
| | - Rudney A Santos
- Geosciences Institute, University of São Paulo, 05508-0 80, São Paulo, Brazil
| | | | - Angela Ampuero
- Geochemistry Department, Fluminense Federal University, 24020-141, Niterói, Brazil
| | - Francisco W Cruz
- Geosciences Institute, University of São Paulo, 05508-0 80, São Paulo, Brazil
| | - Paulo de Oliveira
- Geosciences Institute, University of São Paulo, 05508-0 80, São Paulo, Brazil
| | - José Iriarte
- Department of Archeology, University of Exeter, Exeter, UK
| | - Cintia F Stumpf
- Geociences Institute, University of Brasília, 70910-900, Brasília, Brazil
| | - Mathias Vuille
- Department of Atmospheric and Environmental Sciences, University at Albany, Albany, NY, USA
| | - Vinícius R Mendes
- Marine Science Department, Federal University of São Paulo, 11050-020, Santos, Brazil
| | - Hai Cheng
- Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China.,Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN, USA
| | - R Lawrence Edwards
- Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN, USA
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10
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de Souza JG, Robinson M, Maezumi SY, Capriles J, Hoggarth JA, Lombardo U, Novello VF, Apaéstegui J, Whitney B, Urrego D, Alves DT, Rostain S, Power MJ, Mayle FE, da Cruz FW, Hooghiemstra H, Iriarte J. Climate change and cultural resilience in late pre-Columbian Amazonia. Nat Ecol Evol 2019; 3:1007-1017. [PMID: 31209292 DOI: 10.1038/s41559-019-0924-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 05/14/2019] [Indexed: 11/09/2022]
Abstract
The long-term response of ancient societies to climate change has been a matter of global debate. Until recently, the lack of integrative studies using archaeological, palaeoecological and palaeoclimatological data prevented an evaluation of the relationship between climate change, distinct subsistence strategies and cultural transformations across the largest rainforest of the world, Amazonia. Here we review the most relevant cultural changes seen in the archaeological record of six different regions within Greater Amazonia during late pre-Columbian times. We compare the chronology of those cultural transitions with high-resolution regional palaeoclimate proxies, showing that, while some societies faced major reorganization during periods of climate change, others were unaffected and even flourished. We propose that societies with intensive, specialized land-use systems were vulnerable to transient climate change. In contrast, land-use systems that relied primarily on polyculture agroforestry, resulting in the formation of enriched forests and fertile Amazonian dark earth in the long term, were more resilient to climate change.
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Affiliation(s)
- Jonas Gregorio de Souza
- Department of Humanities, Universitat Pompeu Fabra, Barcelona, Spain. .,Department of Archaeology, University of Exeter, Exeter, UK.
| | - Mark Robinson
- Department of Archaeology, University of Exeter, Exeter, UK
| | - S Yoshi Maezumi
- Department of Archaeology, University of Exeter, Exeter, UK.,Department of Geography and Geology, The University of the West Indies at Mona, Kingston, Jamaica
| | - José Capriles
- Department of Anthropology, Pennsylvania State University, University Park, PA, USA
| | | | | | | | | | - Bronwen Whitney
- Department of Geography and Environmental Sciences, Northumbria University, Newcastle, UK
| | - Dunia Urrego
- Department of Archaeology, University of Exeter, Exeter, UK
| | | | - Stephen Rostain
- Department of Archaeology, French National Centre for Scientific Research, Paris, France
| | - Mitchell J Power
- Geography Department, The University of Utah, Salt Lake City, UT, USA
| | - Francis E Mayle
- Department of Geography and Environmental Science, University of Reading, Reading, UK
| | | | - Henry Hooghiemstra
- Institute for Biodiversity and Ecosystem Dynamics, Universiteit van Amsterdam, Amsterdam, the Netherlands
| | - José Iriarte
- Department of Archaeology, University of Exeter, Exeter, UK
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11
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Ríos A, López-Navas A, López-López A, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Gutiérrez PR, Fernández A, de Jesús MT, Martínez Alarcón L, Lana A, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Hernández AM, Ayala MA, Ramírez P, Parrilla P. A Multicentre and stratified study of the attitude of medical students towards organ donation in Spain. Ethn Health 2019; 24:443-461. [PMID: 28665141 DOI: 10.1080/13557858.2017.1346183] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Medical students represent a new generation of medical thought, and if they have a favourable attitude towards organ donation this will greatly encourage its promotion. OBJECTIVE To analyse the attitude of medical students in Spanish universities towards the donation of their own organs and to determine the factors affecting this attitude. MATERIAL AND METHODS Type of study: A sociological, interdisciplinary, multicentre, and observational study in Spain. STUDY POPULATION Students studying a degree in medicine enrolled in Spain (n = 34,000). SAMPLE SIZE A sample of 9598 students (confidence of 99% and precision of ±1%), stratified by geographical area and academic year. Instrument of measurement: A validated questionnaire of attitude towards organ donation and transplantation (PCID-DTO RIOS) was self-administered and completed anonymously. RESULTS The questionnaire completion rate was 95.7% (n = 9.275). 80% were in favour of donation, 2% against and 18% were undecided. The following main variables were related to a favourable attitude: being of the female sex (Odds Ratio = 1.739); being in the sixth year of the degree (OR = 2.506); knowing a donor (OR = 1.346); having spoken about the subject with one's family (OR = 2.132) and friends (OR = 1.333); having a family circle that is in favour, more specifically, having a father (OR = 1.841), mother (OR = 2.538) or partner in favour (OR = 2.192); being a blood donor (OR = 2.824); acceptance of the mutilation of the body if it were necessary (OR = 2.958); and being an atheist or an agnostic (OR = 1.766). CONCLUSIONS Spanish medical students generally have a favourable attitude towards organ donation, although 20% are not in favour.
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Affiliation(s)
- A Ríos
- a International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante") , Murcia , Spain
- b Department of Surgery, Paediatrics, Obstetrics and Gynaecology , University of Murcia , Murcia , Spain
- c Transplant Unit, Surgery Service , IMIB - Virgen de la Arrixaca University Hospital , Murcia , Spain
- d Regional Transplant Centre , Consejería de Sanidad y Consumo de la Región de Murcia , Murcia , Spain
| | - A López-Navas
- a International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante") , Murcia , Spain
- e Department of Psychology , Universidad Católica San Antonio (UCAM) , Murcia , Spain
| | - A López-López
- f Department of Urology , San Juan University Hospital of Alicante , Alicante , Spain
| | - F J Gómez
- g Facultad de Medicina, Universidad de Granada , Granada , Spain
| | - J Iriarte
- h Facultad de Medicina, Universidad de Navarra , Navarra , Spain
| | - R Herruzo
- i Facultad de Medicina, Universidad Autónoma de Madrid , Madrid , Spain
| | - G Blanco
- j Servicio de Cirugía HBP y Trasplante Hepático , Complejo Hospitalario Universitario de Badajoz, Hospital Infanta Cristina , Badajoz , Spain
| | - F J Llorca
- k Facultad de Medicina, Universidad de Cantabria , Santander , Spain
| | - A Asunsolo
- l Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud , Universidad de Alcalá Campus Científico-Tecnológico , Alcala de Henares , Spain
| | - P Sánchez
- m Facultad de Medicina , Universidad de Málaga , Málaga , Spain
| | - P R Gutiérrez
- n Servicio de Urología (Complejo Hospitalario Universitario de Canarias, CHUC) y Departamento de Cirugía (Universidad de La Laguna, ULL) San Cristóbal de La Laguna , Tenerife , Spain
| | - A Fernández
- o Departamento de Ciencias Biomédicas Básicas, Facultad de Ciencias Biomédicas , Universidad Europea de Madrid , Madrid , Spain
| | - M T de Jesús
- p Facultad de Medicina, Universidad Rey Juan Carlos , Madrid , Spain
| | - L Martínez Alarcón
- a International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante") , Murcia , Spain
- c Transplant Unit, Surgery Service , IMIB - Virgen de la Arrixaca University Hospital , Murcia , Spain
| | - A Lana
- q Facultad de Medicina y Ciencias de la Salud, Área de Medicina Preventiva y Salud Pública , Universidad de Oviedo , Oviedo , Spain
| | - L Fuentes
- r Departamento de Farmacología y Fisiología Facultad de Ciencias de la Salud y del Deporte , Universidad de Zaragoza , Huesca , Spain
| | - J R Hernández
- s Facultad de Medicina, Universidad de las Palmas de Gran Canaria , Las Palmas de Gran Canaria , Spain
| | - J Virseda
- t Facultad de Medicina, Universidad de Castilla La Mancha , Albacete , Spain
| | - J Yelamos
- u Department of Immunology , Hospital del Mar , Barcelona , Spain
| | - J A Bondía
- m Facultad de Medicina , Universidad de Málaga , Málaga , Spain
| | - A M Hernández
- v Endocrinology and Nutrition Service , Hospital Clínico Universitario Virgen de la Arrixaca, El Palmar, Servicio Murciano de Salud , Murcia , Spain
| | - M A Ayala
- w Hospital Regional de Alta Especialidad del Bajío , León , Mexico
- x HGSZ No. 10 del Instituto Mexicano del Seguro Social Delegación Guanajuato , Guanajuato , Mexico
| | - P Ramírez
- a International Collaborative Donor Project ("Proyecto Colaborativo Internacional Donante") , Murcia , Spain
- b Department of Surgery, Paediatrics, Obstetrics and Gynaecology , University of Murcia , Murcia , Spain
- c Transplant Unit, Surgery Service , IMIB - Virgen de la Arrixaca University Hospital , Murcia , Spain
- d Regional Transplant Centre , Consejería de Sanidad y Consumo de la Región de Murcia , Murcia , Spain
| | - P Parrilla
- b Department of Surgery, Paediatrics, Obstetrics and Gynaecology , University of Murcia , Murcia , Spain
- c Transplant Unit, Surgery Service , IMIB - Virgen de la Arrixaca University Hospital , Murcia , Spain
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12
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Ríos A, López-Navas A, Gutiérrez PR, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Fernández A, de Jesús MT, Martínez Alarcón L, Lana A, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Hernández AM, Ayala MA, Flores-Medina J, Carrillo J, Sánchez Á, Ramírez P, Parrilla P. Sensitization Toward Organ Donation Among Medical Students in Spanish Regions With More Than 50 Donors Per Million Population. Transplant Proc 2019; 51:261-264. [PMID: 30879516 DOI: 10.1016/j.transproceed.2018.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/23/2018] [Indexed: 12/24/2022]
Abstract
The awareness of organ donation among health professionals is important at the time of transplant promotion. In this sense, the training and awareness of the professionals in training is fundamental. OBJECTIVE To analyze the differences in the attitude toward organ donation and the factors that condition it among medical students of regions with donation rates >50 donors per million population (pmp) with respect to those with rates <40 donor pmp. METHOD Population under study: medical students in Spanish universities. Database of the Collaborative International Donor Project, stratified by geographic area and academic course. The completion was anonymous and self-administered. Groups under study: Group 1 (n = 1136): students in universities of regions with >50 donors pmp. Group 2 (n = 2018): university students in regions with <40 donors pmp. Assessment instrument: attitude questionnaire for organ donation for transplant PCID-DTO-Ríos. RESULTS The attitude toward organ donation for transplantation is similar among students from the autonomous communities with >50 donors pmp and with <40 donors pmp. In group 1, 79% (n = 897) of students are in favor compared with 81% (n = 1625) of group 2 (P=.29). The psychosocial profile toward donation is similar in both groups relating to the following variables (P < .05): sex, having discussed transplantation with family and as a couple, considering the possibility of needing a transplant, involvement in prosocial activities, attitude toward the manipulation of corpses, knowledge of the brain death concept, and religion. CONCLUSIONS The awareness of organ donation in Spanish medical students is quite homogeneous and is not related to the local donation rates of each region.
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Affiliation(s)
- A Ríos
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Centre, Consejería de Sanidad y Consumo de la Región de Murcia, Murcia, Spain.
| | - A López-Navas
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Department of Psychology, Catholic University of Murcia (UCAM), Murcia, Spain
| | - P R Gutiérrez
- Servicio de Urología (Complejo Hospitalario Universitario de Canarias, CHUC) y Departamento de Cirugía (Universidad de La Laguna, ULL) San Cristóbal de La Laguna, Tenerife, Spain
| | - F J Gómez
- Universidad de Granada, Granada, Spain
| | - J Iriarte
- Universidad de Navarra, Navarra, Spain
| | - R Herruzo
- Universidad Autónoma de Madrid, Madrid, Spain
| | - G Blanco
- Servicio de Cirugía HBP y Trasplante Hepático, Complejo Hospitalario Universitario de Badajoz, Hospital Infanta Cristina, Badajoz, Spain
| | - F J Llorca
- Universidad de Cantabria, Santander, Spain
| | - A Asunsolo
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá Campus Científico-Tecnológico, Alcala de Henares, Madrid, Spain
| | - P Sánchez
- Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - A Fernández
- Servicio de Urología (Complejo Hospitalario Universitario de Canarias, CHUC) y Departamento de Cirugía (Universidad de La Laguna, ULL) San Cristóbal de La Laguna, Tenerife, Spain
| | - M T de Jesús
- Departamento de Ciencias Biomédicas Básicas, Facultad de Ciencias Biomédicas, Universidad Europea de Madrid, Madrid, Spain
| | - L Martínez Alarcón
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - A Lana
- Universidad Rey Juan Carlos, Madrid, Spain
| | - L Fuentes
- Facultad de Medicina y Ciencias de la Salud, Área de Medicina Preventiva y Salud Pública, Universidad de Oviedo, Oviedo, Spain
| | - J R Hernández
- Departamento de Farmacología y Fisiología Facultad de Ciencias de la Salud y del Deporte, Universidad de Zaragoza, Huesca, Spain
| | - J Virseda
- Universidad de las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - J Yelamos
- Universidad de Castilla La Mancha, Albacete, Spain
| | - J A Bondía
- Department of Immunology, Hospital del Mar, Barcelona, Spain
| | - A M Hernández
- Endocrinology and Nutrition Service, Hospital Clínico Universitario Virgen de la Arrixaca, El Palmar, Servicio Murciano de Salud, Murcia, Spain
| | - M A Ayala
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Hospital Regional de Alta Especialidad del Bajío, León, Guanajuato, México; Hospital Regional no. 58 del IMSS, Delegación Guanajuato, México; Escuela de Medicina de la Universidad de Quetzalcoatl en Irapuato, Irapuato, México
| | - J Flores-Medina
- Department of Psychology, Catholic University of Murcia (UCAM), Murcia, Spain
| | - J Carrillo
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, y Gynaecology, University of Murcia, Murcia, Spain
| | - Á Sánchez
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain
| | - P Ramírez
- Proyecto Colaborativo Internacional Donante (International Collaborative Donor Project), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics, y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Centre, Consejería de Sanidad y Consumo de la Región de Murcia, Murcia, Spain
| | - P Parrilla
- Department of Surgery, Paediatrics, Obstetrics, y Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
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Ríos A, López-Navas A, Gutiérrez P, Gómez F, Iriarte J, Herruzo R, Blanco G, Llorca F, Asunsolo A, Sánchez P, Fernández A, de Jesús M, Martínez Alarcón L, Lana A, Fuentes L, Hernández J, Virseda J, Yelamos J, Bondía J, Hernández A, Ayala M, Flores-Medina J, Carrillo J, Sánchez Á, Ramírez P, Parrilla P. Do Religious Factors Influence the Attitude Toward Organ Donation Among Medical Students? A Spanish Multicenter Study. Transplant Proc 2019; 51:250-252. [DOI: 10.1016/j.transproceed.2018.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/24/2018] [Accepted: 11/26/2018] [Indexed: 11/30/2022]
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Maezumi SY, Alves D, Robinson M, de Souza JG, Levis C, Barnett RL, Almeida de Oliveira E, Urrego D, Schaan D, Iriarte J. The legacy of 4,500 years of polyculture agroforestry in the eastern Amazon. Nat Plants 2018; 4:540-547. [PMID: 30038410 PMCID: PMC6119467 DOI: 10.1038/s41477-018-0205-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 06/15/2018] [Indexed: 05/29/2023]
Abstract
The legacy of pre-Columbian land use in the Amazonian rainforest is one of the most controversial topics in the social1-10 and natural sciences11,12. Until now, the debate has been limited to discipline-specific studies, based purely on archaeological data8, modern vegetation13, modern ethnographic data3 or a limited integration of archaeological and palaeoecological data12. The lack of integrated studies to connect past land use with modern vegetation has left questions about the legacy of pre-Columbian land use on the modern vegetation composition in the Amazon, unanswered11. Here, we show that persistent anthropogenic landscapes for the past 4,500 years have had an enduring legacy on the hyperdominance of edible plants in modern forests in the eastern Amazon. We found an abrupt enrichment of edible plant species in fossil lake and terrestrial records associated with pre-Columbian occupation. Our results demonstrate that, through closed-canopy forest enrichment, limited clearing for crop cultivation and low-severity fire management, long-term food security was attained despite climate and social changes. Our results suggest that, in the eastern Amazon, the subsistence basis for the development of complex societies began ~4,500 years ago with the adoption of polyculture agroforestry, combining the cultivation of multiple annual crops with the progressive enrichment of edible forest species and the exploitation of aquatic resources. This subsistence strategy intensified with the later development of Amazonian dark earths, enabling the expansion of maize cultivation to the Belterra Plateau, providing a food production system that sustained growing human populations in the eastern Amazon. Furthermore, these millennial-scale polyculture agroforestry systems have an enduring legacy on the hyperdominance of edible plants in modern forests in the eastern Amazon. Together, our data provide a long-term example of past anthropogenic land use that can inform management and conservation efforts in modern Amazonian ecosystems.
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Affiliation(s)
- S Yoshi Maezumi
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK.
| | - Daiana Alves
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | - Mark Robinson
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
| | | | - Carolina Levis
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Forest Ecology and Management Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Robert L Barnett
- Department of Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | | | - Dunia Urrego
- Department of Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Denise Schaan
- Department of Anthropology, Federal University of Pará, Belém, Brazil
| | - José Iriarte
- Department of Archaeology, College of Humanities, University of Exeter, Exeter, UK
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de Souza JG, Schaan DP, Robinson M, Barbosa AD, Aragão LEOC, Marimon BH, Marimon BS, da Silva IB, Khan SS, Nakahara FR, Iriarte J. Pre-Columbian earth-builders settled along the entire southern rim of the Amazon. Nat Commun 2018; 9:1125. [PMID: 29588444 PMCID: PMC5871619 DOI: 10.1038/s41467-018-03510-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 02/20/2018] [Indexed: 11/10/2022] Open
Abstract
The discovery of large geometrical earthworks in interfluvial settings of southern Amazonia has challenged the idea that Pre-Columbian populations were concentrated along the major floodplains. However, a spatial gap in the archaeological record of the Amazon has limited the assessment of the territorial extent of earth-builders. Here, we report the discovery of Pre-Columbian ditched enclosures in the Tapajós headwaters. The results show that an 1800 km stretch of southern Amazonia was occupied by earth-building cultures living in fortified villages ~Cal AD 1250-1500. We model earthwork distribution in this broad region using recorded sites, with environmental and terrain variables as predictors, estimating that earthworks will be found over ~400,000 km2 of southern Amazonia. We conclude that the interfluves and minor tributaries of southern Amazonia sustained high population densities, calling for a re-evaluation of the role of this region for Pre-Columbian cultural developments and environmental impact.
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Affiliation(s)
- Jonas Gregorio de Souza
- Department of Archaeology, College of Humanities, University of Exeter, Laver Building, North Park Road, Exeter, EX4 4QE, UK.
| | - Denise Pahl Schaan
- Department of Anthropology, Federal University of Pará, Belém, 66075-110, Brazil
| | - Mark Robinson
- Department of Archaeology, College of Humanities, University of Exeter, Laver Building, North Park Road, Exeter, EX4 4QE, UK
| | | | - Luiz E O C Aragão
- Remote Sensing Division, National Institute for Space Research, São José dos Campos, 12227-010, SP, Brazil.,College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, UK
| | - Ben Hur Marimon
- Universidade do Estado de Mato Grosso, Campus de Nova Xavantina, Nova Xavantina, MT, 78690-000, Brazil
| | - Beatriz Schwantes Marimon
- Universidade do Estado de Mato Grosso, Campus de Nova Xavantina, Nova Xavantina, MT, 78690-000, Brazil
| | - Izaias Brasil da Silva
- Remote Sensing Division, National Institute for Space Research, São José dos Campos, 12227-010, SP, Brazil
| | - Salman Saeed Khan
- Department of Archaeology, College of Humanities, University of Exeter, Laver Building, North Park Road, Exeter, EX4 4QE, UK
| | | | - José Iriarte
- Department of Archaeology, College of Humanities, University of Exeter, Laver Building, North Park Road, Exeter, EX4 4QE, UK
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Ríos A, López-Navas A, López-López A, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Gutiérrez PR, Fernández A, de Jesús MT, Alarcón LM, del Olivo M, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Hernández AM, Ayala MA, Ramírez P, Parrilla P. Do Spanish Medical Students Understand the Concept of Brain Death? Prog Transplant 2018; 28:77-82. [DOI: 10.1177/1526924817746687] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective: To analyze the level of understanding of the brain death concept among medical students in universities in Spain. Methods: This cross-sectional sociological, interdisciplinary, and multicenter study was performed on 9598 medical students in Spain. The sample was stratified by geographical area and academic year. A previously validated self-reported measure of brain death knowledge (questionnaire Proyecto Colaborativo Internacional Donante sobre la Donación y Transplante de Organos) was completed anonymously by students. Results: Respondents completed 9275 surveys for a completion rate of 95.7%. Of those, 67% (n = 6190) of the respondents understood the brain death concept. Of the rest, 28% (n = 2652) did not know what it meant, and the remaining 5% (n = 433) believed that it did not mean that the patient was dead. The variables related to a correct understanding of the concept were: (1) being older ( P < .001), (2) studying at a public university ( P < .001), (3) year of medical school ( P < .001), (4) studying at one of the universities in the south of Spain ( P = .003), (5) having discussed donation and transplantation with the family ( P < .001), (6) having spoken to friends about the matter ( P < .001), (7) a partner’s favorable attitude toward donation and transplantation ( P < .001), and (8) religious beliefs ( P < .001). Conclusions: Sixty-seven percent of medical students know the concept of brain death, and knowledge improved as they advanced in their degree.
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Affiliation(s)
- Antonio Ríos
- International Collaborative Donor Project (“Proyecto Colaborativo Internacional Donante”), Murcia, Spain
- Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain
- Transplant Unit, Surgery Service, IMIB—Virgen de la Arrixaca University Hospital, Murcia, Spain
- Regional Transplant Centre, Consejería de Sanidad y Consumo, Murcia, Spain
| | - A. López-Navas
- International Collaborative Donor Project (“Proyecto Colaborativo Internacional Donante”), Murcia, Spain
- Department of Psychology, Universidad Católica San Antonio (UCAM), Murcia, Spain
| | - A. López-López
- San Juan University Hospital of Alicante, Alicante, Spain
| | | | | | - R. Herruzo
- Universidad Autónoma de Madrid, Madrid, Spain
| | - G. Blanco
- Liver Transplant Unit, Hospital Infanta Cristina, Badajoz, Spain
| | | | - A. Asunsolo
- Department of Surgery, Universidad de Alcalá de Henares, Madrid, Spain
| | - P. Sánchez
- Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - P. R. Gutiérrez
- Department of Surgery, Universidad de La Laguna, Tenerife, Spain
| | - A. Fernández
- Departamento de Ciencias Biomédicas Básicas, Universidad Europea de Madrid, Madrid, Spain
| | | | - L. Martínez Alarcón
- International Collaborative Donor Project (“Proyecto Colaborativo Internacional Donante”), Murcia, Spain
- Transplant Unit, Surgery Service, IMIB—Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - M. del Olivo
- Medicine Faculty, Universidad de Oviedo, Oviedo, Spain
| | - L. Fuentes
- Department of Pharmacology and Physiology, Universidad de Zaragoza, Huesca, Spain
| | - J. R. Hernández
- Universidad de las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Islas Canarias, Spain
| | - J. Virseda
- Universidad de Castilla La Mancha, Albacete, Spain
| | - J. Yelamos
- Department of Immunology, Hospital del Mar, Barcelona, Spain
| | - J. A. Bondía
- Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - A. M. Hernández
- Endocrinology and Nutrition Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - M. A. Ayala
- Hospital Regional de Alta Especialidad del Bajío, León, Guanajuato, Mexico
- HGSZ No. 10 del Instituto Mexicano del Seguro Social Delegación Guanajuato, Guanajuato, Mexico
| | - P. Ramírez
- International Collaborative Donor Project (“Proyecto Colaborativo Internacional Donante”), Murcia, Spain
- Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain
- Transplant Unit, Surgery Service, IMIB—Virgen de la Arrixaca University Hospital, Murcia, Spain
- Regional Transplant Centre, Consejería de Sanidad y Consumo, Murcia, Spain
| | - P. Parrilla
- Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain
- Transplant Unit, Surgery Service, IMIB—Virgen de la Arrixaca University Hospital, Murcia, Spain
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Gregorio de Souza J, Robinson M, Corteletti R, Cárdenas ML, Wolf S, Iriarte J, Mayle F, DeBlasis P. Understanding the Chronology and Occupation Dynamics of Oversized Pit Houses in the Southern Brazilian Highlands. PLoS One 2016; 11:e0158127. [PMID: 27384341 PMCID: PMC4934860 DOI: 10.1371/journal.pone.0158127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 06/10/2016] [Indexed: 11/18/2022] Open
Abstract
A long held view about the occupation of southern proto-Jê pit house villages of the southern Brazilian highlands is that these sites represent cycles of long-term abandonment and reoccupation. However, this assumption is based on an insufficient number of radiocarbon dates for individual pit houses. To address this problem, we conducted a programme of comprehensive AMS radiocarbon dating and Bayesian modelling at the deeply stratified oversized pit House 1, Baggio I site (Cal. A.D. 1395-1650), Campo Belo do Sul, Santa Catarina state, Brazil. The stratigraphy of House 1 revealed an unparalleled sequence of twelve well preserved floors evidencing a major change in occupation dynamics including five completely burnt collapsed roofs. The results of the radiocarbon dating allowed us to understand for the first time the occupation dynamics of an oversized pit house in the southern Brazilian highlands. The Bayesian model demonstrates that House 1 was occupied for over two centuries with no evidence of major periods of abandonment, calling into question previous models of long-term abandonment. In addition, the House 1 sequence allowed us to tie transformations in ceramic style and lithic technology to an absolute chronology. Finally, we can provide new evidence that the emergence of oversized domestic structures is a relatively recent phenomenon among the southern proto-Jê. As monumental pit houses start to be built, small pit houses continue to be inhabited, evidencing emerging disparities in domestic architecture after AD 1000. Our research shows the importance of programmes of intensive dating of individual structures to understand occupation dynamics and site permanence, and challenges long held assumptions that the southern Brazilian highlands were home to marginal cultures in the context of lowland South America.
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Affiliation(s)
| | - Mark Robinson
- Department of Archaeology, University of Exeter, Exeter, United Kingdom
| | - Rafael Corteletti
- Museu de Arqueologia e Etnologia, Universidade de São Paulo (MAE-USP), São Paulo, Brazil
| | - Macarena Lucia Cárdenas
- Department of Geography and Environmental Science, University of Reading, Reading, United Kingdom
| | - Sidnei Wolf
- Centro Universitário Univates, Lajeado, Brazil
| | - José Iriarte
- Department of Archaeology, University of Exeter, Exeter, United Kingdom
| | - Francis Mayle
- Department of Geography and Environmental Science, University of Reading, Reading, United Kingdom
| | - Paulo DeBlasis
- Museu de Arqueologia e Etnologia, Universidade de São Paulo (MAE-USP), São Paulo, Brazil
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Poggio TV, Jensen O, Mossello M, Iriarte J, Avila HG, Gertiser ML, Serafino JJ, Romero S, Echenique MA, Dominguez DE, Barrios JR, Heath D. Serology and longevity of immunity against Echinococcus granulosus in sheep and llama induced by an oil-based EG95 vaccine. Parasite Immunol 2016; 38:496-502. [PMID: 27104482 DOI: 10.1111/pim.12325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 04/18/2016] [Indexed: 11/30/2022]
Abstract
An oil-based formulation of the EG95 vaccine to protect grazing animals against infection with Echinococcus granulosus was formulated in Argentina. The efficacy of the vaccine was monitored by serology in sheep and llama (Lama glama) and was compared to the serology in sheep previously published using a QuilA-adjuvanted vaccine. Long-term efficacy was also tested in sheep by challenging with E. granulosus eggs of the G1 strain 4 years after the beginning of the trial. The serological results for both sheep and llama were similar to those described previously, except that there was a more rapid response after the first vaccination. A third vaccination given after 1 year resulted in a transient boost in serology that lasted for about 12 months, which was similar to results previously described. Sheep challenged after 4 years with three vaccinations presented 84·2% reduction of live cysts counts compared with control group, and after a fourth vaccination prior to challenge, this reduction was 94·7%. The oil-based vaccine appeared to be bio-equivalent to the QuilA vaccine.
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Affiliation(s)
- T V Poggio
- Centro de Virologia Animal, Instituto de Ciencia y Tecnología "Dr. Cesar Milstein" - CONICET, Buenos Aires, Argentina
| | - O Jensen
- Centro de Investigación en Zoonosis, Chubut, Argentina
| | - M Mossello
- Departamento Zooantroponosis, Ministerio de Salud, Chubut, Argentina
| | - J Iriarte
- Departamento Zooantroponosis, Ministerio de Salud, Chubut, Argentina
| | - H G Avila
- Facultad de Medicina, Instituto de Investigaciones en Microbiología y Parasitología Médica, Universidad de Buenos Aires (IMPAM-CONICET-UBA), Buenos Aires, Argentina
| | - M L Gertiser
- Centro de Investigación en Zoonosis, Chubut, Argentina
| | - J J Serafino
- Centro de Virologia Animal, Instituto de Ciencia y Tecnología "Dr. Cesar Milstein" - CONICET, Buenos Aires, Argentina
| | - S Romero
- Estación Experimental Agropecuaria, INTA, Abra Pampa, Jujuy, Argentina
| | - M A Echenique
- Estación Experimental Agropecuaria, INTA, Abra Pampa, Jujuy, Argentina
| | - D E Dominguez
- Dirección de Sanidad Animal, Subsecretaría de Ganadería y Agricultura, Ministerio de Desarrollo Territorial y Sectores Productivos, Chubut, Argentina
| | - J R Barrios
- Oficina Local Puerto Madryn, Dirección de Sanidad Animal, Servicio Nacional de Sanidad Animal (SENASA), Argentina
| | - D Heath
- AgResearch Ltd., Palmerston North, New Zealand
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Ríos A, López-Navas A, López-López A, Gómez FJ, Iriarte J, Herruzo R, Blanco G, Llorca FJ, Asunsolo A, Sánchez P, Gutiérrez PR, Fernández A, de Jesús MT, Martínez-Alarcón L, del Olivo M, Fuentes L, Hernández JR, Virseda J, Yelamos J, Bondía JA, Hernández A, Ayala MA, Ramírez P, Parrilla P. Medical students faced with related and unrelated living kidney donation: a stratified and multicentre study in Spain. World J Urol 2016; 34:1673-1684. [DOI: 10.1007/s00345-016-1797-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 02/16/2016] [Indexed: 10/22/2022] Open
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Abstract
No presente artigo, se apresenta uma síntese dos estudos arqueobotânicos realizados em sítios agrícolas de zonas úmidas pré-Colombianos das terás baixas sul-americanas. Se resume a evidência obtida através do estudo de macro- e microvestígios botânicos recuperados tanto de feições agrícolas como de sítios arqueológicos de habitação e sedimentos lacustres associados aos mesmos. A análise dos dados mostra que uma grande diversidade de plantas foram cultivadas nos campos elevados e drenados e consumidos nos sítios habitacionais associados incluindo: a) o milho, b) os tubérculos e as raízes como a mandioca, a batata doce, o inhame, possivelmente o taro e Canáceas y Marantáceas, c) vegetais como o amendoim e a abóbora, d) frutos como palmas, y provavelmente a jaboticaba, o maracujá e a goiaba, e) cultivos industriais como o algodão y possivelmente tinturas como o anil e o urucum, assim como se tem sugerido f) verbas medicinais, estimulantes e alucinógenas como a erva mate, a coca e o paricá. Os resultados mostram que o milho foi provavelmente a planta doméstica mais importante. Se argumenta que a agricultura intensiva de milho em campos elevados ou drenados junto a outras atividades de subsistência complementares foi capaz de sustentar populações numerosas nas terras baixas sul-americanas que transformaram a paisagem em grande escala durante o Holoceno tardio. Palavras-chave: Zea mays, agricultura pré-Colombiana, terras baixas da América do Sul
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Iriarte J, Palma JA, Kufoy E, Miguel MJD. [Brain death: is it an appropriate term?]. Neurologia 2010; 27:16-21. [PMID: 21163214 DOI: 10.1016/j.nrl.2010.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 06/07/2010] [Accepted: 06/20/2010] [Indexed: 10/18/2022] Open
Abstract
INTRODUCTION Brain death is generally accepted as a concept to indicate death. It was introduced about 40 years ago, and it was considered the ideal situation for donation of organs. METHODS During this time, however, there have been problems in the understanding of this concept both in the medical profession and in the general population. University students from medical and non-medical schools were tested for their understanding of this concept. RESULTS Our results show that less than one third of the non-medical students identified brain death as death. The data from the medical students changed as they progressed through their studies, but only 2/3 of the graduating medical class believed that brain death is death. CONCLUSION Similar results have been seen in other universities around the world, and a renewed effort on the re-education of the concept of brain death may be worthwhile. Although we cannot extrapolate these results to the general population, the confusion is probably similar; hence an effort should be made to solve this problem.
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Affiliation(s)
- J Iriarte
- Servicio de Neurofisiología,Facultad de Medicina, Universidad de Navarra, Pamplona, España.
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Artieda J, Alegre M, Valencia M, Urrestarazu E, Pérez Alcázar M, Nicolás MJ, Azcárate JL, Iriarte J. [Brain oscillations: pathophysiological and potentially therapeutic role in some neurological and psychiatric diseases]. An Sist Sanit Navar 2010; 32 Suppl 3:45-60. [PMID: 20094085 DOI: 10.23938/assn.0150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The terms "oscillations" or "oscillatory activity" are frequently used not only to define the rhythmic fluctuations of the postsynaptic potentials of a neuronal group (local field potentials) or a cortical region (EEG, MEG), but also to indicate the rhythmic discharge pattern of action potentials from a neuron or a small group of neurons. Oscillatory activity makes possible the synchronization of different neuronal groups from nearby or distant cortical regions that participate in the same motor, sensory or cognitive task. The presence of oscillatory activity is usually associated to the existence of synchronization, but both phenomena are not necessarily always equivalent. Abnormalities of oscillatory activities or synchronization within or between different brain structures have been described in several neurological and psychiatric diseases; these abnormalities might play a relevant pathophysiological role in Parkinson's disease (and other movement disorders), schizophrenia or epilepsy. This review discusses all these aspects, with emphasis on their potential role both as a basic mechanism in brain function and as a pathophysiological substrate for some of the symptoms and signs observed in several diseases.
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Affiliation(s)
- J Artieda
- Servicio de Neurofisiología Clínica, Clínica Universidad de Navarra, 31008 Pamplona, España.
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Alegre M, Lopez-Azcarate J, Tainta M, Rodriguez-Oroz M, Valencia M, Gonzalez R, Guridi J, Iriarte J, Obeso J, Artieda J. P5-25 Coupling between beta and high-frequency activity in the human subthalamic nucleus may be a pathophysiological mechanism in Parkinson disease. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60547-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Arrondo G, Alegre M, Sepulcre J, Iriarte J, Artieda J, Villoslada P. Abnormalities in brain synchronization are correlated with cognitive impairment in multiple sclerosis. Mult Scler 2009; 15:509-16. [PMID: 19282416 DOI: 10.1177/1352458508101321] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cognitive functions are supported by brain networks and they are highly dependent on the integrity of long white matter tracts that mediate the information flow between such distant cortical areas. Brain damage in multiple sclerosis (MS) may produce cognitive impairment by preferentially damaging these tracts, thereby impairing brain synchrony. Auditory amplitude modulation following responses (AMFR), are oscillatory steady-state responses to rhythmic auditory stimuli that indirectly measure brain synchrony. OBJECTIVE To study the effect of MS lesions in brain synchrony and its relationship with cognitive function. METHODS We assessed the correlation between cognitive performance, as assessed with the brief repeatable battery-neuropsychology (BRB-N), and the AMFR in a group of 27 MS patients and 22 healthy controls. RESULTS The maximal AMFR frequency - but not the amplitude - in the 30-60 Hz range was lower in patients with cognitive impairment than in patients with no cognitive impairment or the healthy controls (39.79 Hz, 43.85 Hz, and 43.84 Hz, respectively, P < 0.05). Indeed, the frequency of the AMFR was negatively correlated with the scores obtained in verbal memory, attention, and executive function. The multiple regression analysis indicates that the AMFR was the best predictor of the BRB-N scores after controlling for potential confounding factors such as age, education, disability, and years of disease evolution. CONCLUSIONS These results suggest that the loss of synchronization in different central nervous system (CNS) pathways caused by demyelinating lesions might involve both the slowing of brain oscillatory activity and less efficient cognitive processing.
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Affiliation(s)
- G Arrondo
- Department of Neurosciences, CIMA University of Navarra, Pamplona, Spain
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Iriarte J, Urrestarazu E, Alegre M, Martín B, Arcocha J, Viteri C, Artieda J. Vídeo-electroencefalografía: una necesidad. An Sist Sanit Navar 2009. [DOI: 10.4321/s1137-66272009000600007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Iriarte J, Urrestarazu E, Alegre M, Martín B, Arcocha J, Viteri C, Artieda J. [Video-electroencephalography: a necessity]. An Sist Sanit Navar 2009; 32 Suppl 3:83-92. [PMID: 20094088 DOI: 10.23938/assn.0147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The video-EEG is a common diagnostic tool nowadays. The technical achievements of the last decade have brought a simplification of the equipment required to obtain good quality recordings, with little more than a computer and a video camera being necessary. However, the medical and technical staff must be well trained to execute and interpret the study. It is very useful in the diagnosis of paroxysmal events, for the classification and characterization of epileptic seizures and to quantify epileptiform discharges. Due to the importance of a correct diagnosis to avoid mistreating many neurological patients, this tool should be accessible to clinicians. In spite of the advances of recent years, 20-30% of patients diagnosed with epilepsy are not really epileptic, a fact that it is excessive and unacceptable.
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Affiliation(s)
- J Iriarte
- Servicio de Neurofisiología, Departamento de Neurología y Neurocirugía, Clínica Universidad de Navarra, Pamplona, Spain.
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Artieda J, Alegre M, Valencia M, Urrestarazu E, Pérez-Alcázar M, Nicolás M, López Azcárate J, Iriarte J. Oscilaciones cerebrales: papel fisiopatológico y terapéutico en algunas enfermedades neurológicas y psiquiátricas. An Sist Sanit Navar 2009. [DOI: 10.4321/s1137-66272009000600004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alegre M, Alvarez-Gerriko I, Valencia M, Iriarte J, Artieda J. Oscillatory changes related to the forced termination of a movement. Clin Neurophysiol 2008; 119:290-300. [PMID: 18083620 DOI: 10.1016/j.clinph.2007.10.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Revised: 09/18/2007] [Accepted: 10/18/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Stimulus-induced movements are accompanied by a definite pattern of oscillatory changes, that include a frontal 15 Hz synchronization, a central peri-movement desynchronization, and a contralateral beta rebound after the movement. Our aim was to study the oscillatory changes related to the forced termination of a single complex motor program (signature) and compare them with those observed after the normal termination of the movement. METHODS Fifty-eight reference-free EEG channels were analyzed in 10 healthy subjects. A 2000 Hz tone (S1, go signal) indicated the subject to begin to write his/her complete signature. A second 2000 Hz tone 0.8 s afterwards (50% probability: S2, stop signal) indicated the subject to stop immediately. Movement-related energy changes were evaluated by means of time-frequency (Gabor) transforms. RESULTS A frontal 15 Hz synchronization was observed after S1, but not after S2. The amplitude of the post-movement beta increase was significantly lower when the movement was abnormally terminated (p=0.005), while the peri-movement decrease was similar. CONCLUSIONS The forced termination of a motor program reduces significantly the amplitude of the post-movement beta increment, conserving its temporal pattern. Also, the presence of the 15 Hz frontal synchronization only after S1, together with the results of previous studies, suggests that the frontal mechanisms involved in go/no go and stop signals are very different. SIGNIFICANCE Our results indicate that the beta rebound is an active process, independent of the peri-movement beta decrease, which is influenced by how the movement is terminated.
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Affiliation(s)
- M Alegre
- Neurophysiology Laboratory, Neuroscience Area, CIMA, Universidad de Navarra, Pamplona, Spain
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Iriarte J, Urrestarazu E. [Polysomnography in the neurology patient]. Neurologia 2008; 23:98-109. [PMID: 18322828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
The polysomnography is a standardized diagnostic tool in neurology. It is used to study sleep structure and can diagnose many sleep disorders. Since this test is not always adequately available as it is a complex test that requires a qualified team and staff, its most necessary and urgent indications should be stressed in order to thus avoid the waiting lists. In this paper we review the primary indications of the nocturnal sleep studies in the different groups of neurological disorders. We review the bibliography, selecting the papers that help to specify when the polysomnographic study would be indicated and those situations in which it may be indispensable or urgent.
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Affiliation(s)
- J Iriarte
- Unidad de Sueño, Clínica Universitaria de Navarra, Universidad de Navarra, Pamplona.
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Pérez-Alcázar M, Nicolás MJ, Valencia M, Alegre M, Iriarte J, Artieda J. Chirp-evoked potentials in the awake and anesthetized rat. A procedure to assess changes in cortical oscillatory activity. Exp Neurol 2007; 210:144-53. [PMID: 18177639 DOI: 10.1016/j.expneurol.2007.10.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Revised: 10/10/2007] [Accepted: 10/18/2007] [Indexed: 01/21/2023]
Abstract
Steady-state potentials are oscillatory responses generated by rhythmic stimulation of a sensory pathway. The frequency of the response, which follows the frequency of stimulation and potentially indicates the preferential working frequency of the auditory neural network, is maximal at a stimulus rate of 40 Hz for auditory stimuli in humans, but may be different in other species. Our aim was to explore the responses to different frequencies in the rat. The stimulus was a tone modulated in amplitude by a sinusoid with linearly-increasing frequency from 1 to 250 Hz ("chirp"). Time-frequency transforms were used for response analysis in 12 animals, awake and under ketamine/xylazine anesthesia. We studied whether the responses were due to increases in amplitude or to phase-locking phenomena, using single-sweep time-frequency transforms and inter-trial phase analysis. A progressive decrease in the amplitude of the response was observed from the maximal values (around 15 Hz) up to the limit of the test (250 Hz). The high-frequency component was mainly due to phase-locking phenomena with a smaller amplitude contribution. Under anesthesia, the amplitude and phase-locking of lower frequencies (under 100 Hz) decreased, while the phase-locking over 200 Hz increased. In conclusion, amplitude-modulation following responses differ between humans and rats in response range and frequency of maximal amplitude. Anesthesia with ketamine/xylazine modifies differentially the amplitude and the phase-locking of the responses. These findings should be taken into account when assessing the changes in cortical oscillatory activity related to different drugs, in healthy rodents and in animal models of neurodegenerative diseases.
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Affiliation(s)
- M Pérez-Alcázar
- Neurophysiology Laboratory, Neuroscience Area, CIMA and Clínica Universitaria, Universidad de Navarra, Pamplona, Spain
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Iriarte J, Ayuso T, Echavarri C, Alegre M, Urrestarazu E, Lacruz F, Gállego J, Artieda J. AGRYPNIA EXCITATA IN FATAL FAMILIAL INSOMNIA. A VIDEO-POLYGRAPHIC STUDY. Neurology 2007; 69:607-8. [PMID: 17679681 DOI: 10.1212/01.wnl.0000266664.68223.40] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- J Iriarte
- Clinical Neurophysiology Section, Department of Neurology, Clínica Universitaria, University of Navarra, Pamplona, Navarra, Spain.
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Piperno DR, Moreno JE, Iriarte J, Holst I, Lachniet M, Jones JG, Ranere AJ, Castanzo R. Late Pleistocene and Holocene environmental history of the Iguala Valley, Central Balsas Watershed of Mexico. Proc Natl Acad Sci U S A 2007; 104:11874-81. [PMID: 17537917 PMCID: PMC1880864 DOI: 10.1073/pnas.0703442104] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The origin of agriculture was a signal development in human affairs and as such has occupied the attention of scholars from the natural and social sciences for well over a century. Historical studies of climate and vegetation are closely associated with crop plant evolution because they can reveal the ecological contexts of plant domestication together with the antiquity and effects of agricultural practices on the environment. In this article, we present paleoecological evidence from three lakes and a swamp located in the Central Balsas watershed of tropical southwestern Mexico that date from 14,000 B.P. to the modern era. [Dates expressed in B.P. years are radiocarbon ages. Calibrated (calendar) ages, expressed as cal B.P., are provided for dates in the text.] Previous molecular studies suggest that maize (Zea mays L.) and other important crops such as squashes (Cucurbita spp.) were domesticated in the region. Our combined pollen, phytolith, charcoal, and sedimentary studies indicate that during the late glacial period (14,000-10,000 B.P.), lake beds were dry, the climate was cooler and drier, and open vegetational communities were more widespread than after the Pleistocene ended. Zea was a continuous part of the vegetation since at least the terminal Pleistocene. During the Holocene, lakes became important foci of human activity, and cultural interference with a species-diverse tropical forest is indicated. Maize and squash were grown at lake edges starting between 10,000 and 5,000 B.P., most likely sometime during the first half of that period. Significant episodes of climatic drying evidenced between 1,800 B.P. and 900 B.P. appear to be coeval with those documented in the Classic Maya region and elsewhere, showing widespread instability in the late Holocene climate.
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Affiliation(s)
- D. R. Piperno
- *Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Republic of Panama
- Archaeobiology Program, Department of Anthropology, National Museum of Natural History, Washington, DC 20560
- To whom correspondence should be addressed. E-mail:
| | - J. E. Moreno
- *Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Republic of Panama
| | - J. Iriarte
- Department of Archaeology, School of Geography, Archaeology, and Earth Resources, University of Exeter, Exeter EX4 4QJ, United Kingdom
| | - I. Holst
- *Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Republic of Panama
| | - M. Lachniet
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154
| | - J. G. Jones
- Department of Anthropology, Washington State University, Pullman, WA 99164; and
| | - A. J. Ranere
- **Department of Anthropology, Temple University, Philadelphia, PA 19122
| | - R. Castanzo
- Archaeobiology Program, Department of Anthropology, National Museum of Natural History, Washington, DC 20560
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Campo A, Frühbeck G, Zulueta JJ, Iriarte J, Seijo LM, Alcaide AB, Galdiz JB, Salvador J. Hyperleptinaemia, respiratory drive and hypercapnic response in obese patients. Eur Respir J 2007; 30:223-31. [PMID: 17459895 DOI: 10.1183/09031936.00115006] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Leptin is a powerful stimulant of ventilation in rodents. In humans, resistance to leptin has been consistently associated with obesity. Raised leptin levels have been reported in subjects with sleep apnoea or obesity-hypoventilation syndrome. The aim of the present study was to assess, by multivariate analysis, the possible association between respiratory centre impairment and levels of serum leptin. In total, 364 obese subjects (body mass index >or=30 kg.m(-2)) underwent the following tests: sleep studies, respiratory function tests, baseline and hypercapnic response (mouth occlusion pressure (P(0.1)), minute ventilation), fasting leptin levels, body composition and anthropometric measures. Subjects with airways obstruction on spirometry were excluded. Out of the 346 subjects undergoing testing, 245 were included in the current analysis. Lung volumes, age, log leptin levels, end-tidal carbon dioxide tension, percentage body fat and minimal nocturnal saturation were predictors for baseline P(0.1). The hypercapnic response test was performed by 186 subjects; log leptin levels were predictors for hypercapnic response in males, but not in females. Hyperleptinaemia is associated with a reduction in respiratory drive and hypercapnic response, irrespective of the amount of body fat. These data suggest the extension of leptin resistance to the respiratory centre.
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Affiliation(s)
- A Campo
- Pulmonary Medicine, Clinica Universitaria de Navarra, Avda. Pío XII, 36, 31008 Pamplona, Spain.
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Gállego Pérez-Larraya J, Toledo JB, Urrestarazu E, Iriarte J. [Classification of sleep disorders]. An Sist Sanit Navar 2007; 30 Suppl 1:19-36. [PMID: 17486145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Sleep disorders are frequent processes, both as a symptom associated with other diseases and as independent disorders. However, only in the last 4 decades has Sleep medicine gained its position among the medical specialties. In fact, it was only in these years that significant advances were obtained in the study of the etiology and treatment of these disorders. Similarly, the different classifications have been evolving over the years. First, they were based upon the clinical symptom; later on, more emphasis was given to the diseases. Finally, in 2005, the new classification was once again based on the symptoms. More than 90 disorders are listed in this latest classification, and an attempt is made to include the symptoms and the diseases of sleep, as well as those in which sleep disorders are fundamental. It is essential to have a clear idea of this complete classification of sleep disorders in order to deal with these patients appropriately.
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Pérez-Alcázar M, Alegre M, Valencia M, Barbosa C, Iriarte J, Artieda J. P30.48 Effects of attention on auditory amplitude-modulation following responses. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Valencia M, Alegre M, Iriarte J, Artieda J. High frequency oscillations in the somatosensory evoked potentials (SSEP's) are mainly due to phase-resetting phenomena. J Neurosci Methods 2006; 154:142-8. [PMID: 16458362 DOI: 10.1016/j.jneumeth.2005.12.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2005] [Revised: 12/07/2005] [Accepted: 12/09/2005] [Indexed: 11/21/2022]
Abstract
A small series of high frequency oscillations (HFOs) overlapping the earliest part of the N20 wave can be observed in the somatosensory evoked potentials (SSEPs) of normal subjects. We tried to elucidate whether these high frequency components are mainly due to phase-resetting phenomena, to the emergence of new oscillations related to the stimuli, or to a combination of both. Averaged median-nerve SSEPs from seven healthy subjects were studied by means of time-frequency analysis. The presence of new oscillatory activities was evaluated by averaging the energy of the single-trial time-frequency transforms in the HFOs range (400-1000 Hz). To study phase-resetting phenomena, we measured inter-trial coherence (ITC) in the same frequency range. A marked inter-trial coherence related to the HFOs was found, whereas energy changes (related to the emergence of new oscillations) were minimal. The combination of these three different approaches suggests that the HFOs are mainly due to resettings of the ongoing EEG activity originated in response to the stimuli. The emergence of new activities does not seem to be a relevant mechanism in the formation of these components.
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Affiliation(s)
- M Valencia
- Neurophysiology Laboratory, Centre for Applied Medical Research, Universidad de Navarra, Pamplona, Spain.
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Pallares J, Rojo F, Iriarte J, Morote J, Armadans LI, de Torres I. Study of microvessel density and the expression of the angiogenic factors VEGF, bFGF and the receptors Flt-1 and FLK-1 in benign, premalignant and malignant prostate tissues. Histol Histopathol 2006; 21:857-65. [PMID: 16691538 DOI: 10.14670/hh-21.857] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE Vascular endothelial growth factor (VEGF) is an angiogenic factor that stimulates endothelial cell growth and enhances vascular permeability. VEGF exerts its action by binding to the specific cell surface receptors, fms-like tyrosine kinase 1 (Flt-1) and fetal liver kinase 1 (FLK/KDR). In tumor angiogenesis, Vascular endothelial growth factor stimulates endothelial cells to produce Basic fibroblastic growth factor (bFGF), which further enhances angiogenic activity. Very little information on the expression of VEGF, bFGF, and the receptors Flt-1 and FLK/KDR is available. Herein, we evaluate the expression of these angiogenic factors and receptors in normal prostate, high grade prostate intraepithelial neoplasia (HGPIN) and prostatic cancer (CaP). MATERIALS AND METHODS 58 selected surgical specimens exhibiting areas of normal prostate, HGPIN, and CaP were evaluated for microvessel density, and for VEGF, bFGF, Flt-1 and FLK/KDR protein expression by immunohistochemistry. Results were correlated with pathological data. RESULTS There was a statistically significant increase in the microvessel density and in the expression of the angiogenic factors VEGF, bFGF and the receptors FLK/KDR and Flt-1, in the premalignant and malignant tissues in comparison with normal prostatic glands. Microvessel density also correlated with higher Gleason grade, pathological stage and the expression of the receptors FLK/KDR and Flt-1. CONCLUSIONS The "initiation switch" of angiogenesis was observed to be an early event consistent with the recruitment of new vasculature into high grade PIN lesions and it increased in the progression of prostatic cancer.
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Affiliation(s)
- J Pallares
- Department of Pathology and Molecular Genetics, Hospital Universitari Arnau de Vilanova, Lleida, Spain.
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Alegre M, Lázaro D, Valencia M, Iriarte J, Artieda J. Imitating versus non-imitating movements: Differences in frontal electroencephalographic oscillatory activity. Neurosci Lett 2006; 398:201-5. [PMID: 16483718 DOI: 10.1016/j.neulet.2006.01.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Revised: 12/29/2005] [Accepted: 01/12/2006] [Indexed: 11/27/2022]
Abstract
Non phase-locked oscillatory changes were studied in seven healthy volunteers during two different reaction time movement paradigms, in which the stimulus was a wrist movement (either extension or flexion) performed by another person seated in front of the subject (examiner). In the first paradigm (imitation), the subject was instructed to perform the same movement observed. In the second paradigm (non-imitation), the subject was instructed to perform the opposite movement (flexion when an extension was observed, and vice-versa). Changes in the 7-37 Hz range band were determined by means of Gabor transforms. A frontal energy increase (event-related synchronization, ERS) around 15 Hz could be observed in the frontal region after the examiner's movement; this frontal ERS was significantly larger in the non-imitation paradigm. A typical alpha and beta movement-related event-related desynchronization/synchronization (ERD/ERS) pattern was also observed in both paradigms in the central region. The beta-ERD was significantly larger in the imitation paradigm. Our results show that the motor preparation mechanisms involved in an imitated and a non-imitated movement are different.
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Affiliation(s)
- M Alegre
- Neurophysiology Section, Department of Neurology, Clínica Universitaria, Universidad de Navarra, Pío XII 36, 31008 Pamplona, Spain
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Affiliation(s)
- J Iriarte
- Clinical Neurophysiology Section, Clínica Universitaria, School of Medicine, University of Navarra, Pamplona, Spain.
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Iriarte J, Alegre M, Urrestarazu E, Viteri C, Arcocha J, Artieda J. Continuous positive airway pressure as treatment for catathrenia (nocturnal groaning). Neurology 2006; 66:609-10. [PMID: 16505329 DOI: 10.1212/01.wnl.0000198503.93340.10] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- J Iriarte
- Clinical Neurophysiology Section, Clínica Universitaria, School of Medicine, University of Navarra, Pamplona, Spain.
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Alegre M, Imirizaldu L, Valencia M, Iriarte J, Arcocha J, Artieda J. Alpha and beta changes in cortical oscillatory activity in a go/no go randomly-delayed-response choice reaction time paradigm. Clin Neurophysiol 2005; 117:16-25. [PMID: 16316781 DOI: 10.1016/j.clinph.2005.08.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Revised: 07/05/2005] [Accepted: 08/12/2005] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Predictable movements induce oscillatory changes over the contralateral motor cortex that begin before the movement, but their significance has not been fully established. We studied non-phase-locked changes in cortical oscillatory activity in a S1-centred double-stimulus go/no go paradigm with random interstimulus interval. METHODS About 58 reference-free EEG channels were analyzed by means of Gabor transforms in a group of 10 healthy subjects. A 2000 Hz tone (S1go, 84% probability) indicated the subject to make a brisk wrist extension after a second 2000 Hz tone (S2go). The S1-S2 interval was either 1.5, 3 or 4.5 s. A 1000 Hz tone (S1 no go, 16% probability) indicated the subject not to move (and wait for another S1 tone). RESULTS A frontal 15 Hz synchronization was observed after S1 in all conditions. No further significant changes were observed in the no go condition. A small pre-S2 alpha and beta desynchronization could be observed only in the 3 and 4.5s-interval go conditions, being larger in the latter. CONCLUSIONS These results suggest that the predictability of the timing of a movement influences the appearance of the pre-movement oscillatory changes; not only motor planning (the 'go' decision) is necessary, but also an estimation of when to move. SIGNIFICANCE Our findings provide new insight on the relationship between the decision-making process, movement, and cortical oscillatory activity.
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Affiliation(s)
- M Alegre
- Neurophysiology Laboratory, Neuroscience Area, Centre for Applied Medical Research, Universidad de Navarra, Pamplona, Spain
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Urrestarazu E, Iriarte J. [Mathematical analyses in the study of electroencephalographic signals]. Rev Neurol 2005; 41:423-34. [PMID: 16193448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
AIM The principal mathematical techniques applied to the EEG are reviewed. DEVELOPMENT After the introduction of digital EEG, new mathematical tools have been developed for the EEG analysis. Nowadays there are several techniques that analyse the EEG signal in different ways, getting a better understanding of the EEG: development of new montages; artifact removal; analysis in time domain, phase coherence and synchrony; source analysis; epileptic seizures detection and prediction; superposition of electrical activity and other neuroimaging techniques. Although they have demonstrated their efficacy, the comparison between them is not always easy. CONCLUSIONS The development of mathematical tools for EEG analysis has improved the knowledge of the electric cerebral activity in normal and pathological conditions. They study many different aspects of the EEG signal. Their continuous development will produce an increase the knowledge of the normal and pathological cerebral functions.
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Affiliation(s)
- E Urrestarazu
- Departamento de Neurología, Clínica Universitaria, Universidad de Navarra, Pamplona, Navarra, Spain
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Urrestarazu E, Iriarte J. [Independent Components Analysis (ICA) in the study of electroencephalographic signals]. Neurologia 2005; 20:299-310. [PMID: 16007513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
Independent Component Analysis (ICA) is a mathematical tool able to separate complex signals in statistically independent components. It solves the blind source separation problem (BSS). The EEG satisfies most of the assumptions of ICA, so it may be an adequate signal for ICA for its use. In this paper we review the method and the applications of ICA in EEG. The studied applications are: a) artifacts removal; b) source estimation of spikes; c) analysis of seizures. Several studies have demonstrated that ICA is useful to remove artifacts from contaminated EEG records without distorting cerebral activity. It is able to decompose epileptic discharges and seizures in independent spatio-temporal components. In combination with techniques of source localisation, as dipole modelling, ICA improves the localization of the epileptic focus. Finally, we discuss the future role of ICA in the study of epileptic patients.
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Affiliation(s)
- E Urrestarazu
- Unidad de Epilepsia, Departamento de Neurología, Servicio de Neurofisiología, Clínica Universitaria de Navarra, Universidad de Navarra, Pamplona
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Iriarte J, Holst I, Marozzi O, Listopad C, Alonso E, Rinderknecht A, Montaña J. Evidence for cultivar adoption and emerging complexity during the mid-Holocene in the La Plata basin. Nature 2005; 432:614-7. [PMID: 15577908 DOI: 10.1038/nature02983] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2004] [Accepted: 08/27/2004] [Indexed: 11/10/2022]
Abstract
Multidisciplinary investigations at the Los Ajos archaeological mound complex in the wetlands of southeastern Uruguay challenge the traditional view that the La Plata basin was inhabited by simple groups of hunters and gatherers for much of the pre-Hispanic era. Here we report new archaeological, palaeoecological and botanical data indicating that during an increasingly drier mid-Holocene, at around 4,190 radiocarbon (14C) years before present (bp), Los Ajos became a permanent circular plaza village, and its inhabitants adopted the earliest cultivars known in southern South America. The architectural plan of Los Ajos during the following Ceramic Mound Period (around 3,000-500 14C yr bp) is similar to, but earlier than, settlement patterns demonstrated in Amazonia, revealing a new and independent architectural tradition for South America.
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Affiliation(s)
- José Iriarte
- Center for Tropical Paleoecology and Archaeology, Smithsonian Tropical Research Institute, Box 2072, Balboa, Panama.
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Iriarte J, Urrestarazu E, Alegre M, Artieda J, Viteri C. [Ictal asystolia in the differential diagnosis of dizziness]. Neurologia 2005; 20:45-8. [PMID: 15704022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
Frequently, epileptic seizures are accompanied by changes in the heart rate. They are usually transient and irrelevant for the patient's symptoms and the patient recorders his usually baseline rhythm in second or a few minutes. In this report we present a case of a patient diagnosed previously of epilepsy who presented episodes of dizziness and presyncope. During the video-EEG study we recorded one of these spells. The diagnosis of this spell was a focal seizure associated with asystole: the seizure was almost asymptomatic, and only when the asystole developed (40 seconds after the EEG ictal changes) the patient complained about dizziness. Recovery was fast, but treatment with pacemaker must be considered.
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Affiliation(s)
- J Iriarte
- Unidad de Epilepsia, Departamento de Neurología, Clínica Universitaria de Navarra, Pamplona.
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Alegre M, Gurtubay IG, Labarga A, Iriarte J, Valencia M, Artieda J. Frontal and central oscillatory changes related to different aspects of the motor process: a study in go/no-go paradigms. Exp Brain Res 2004; 159:14-22. [PMID: 15480586 DOI: 10.1007/s00221-004-1928-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2003] [Accepted: 03/15/2004] [Indexed: 10/26/2022]
Abstract
We studied alpha and beta EEG oscillatory changes in healthy volunteers during two different auditory go/no-go paradigms, in order to investigate their relationship with different components of the motor process. In the first paradigm (S2-centered), the initial tone (S1) was constant (warning), and the second tone (S2) indicated the subject whether to move or not. In the second paradigm (S1-centered), S1 indicated whether to move or not, while S2 just indicated the timing of the movement. A medial frontal beta energy increase was found in all conditions after the stimulus that forces the subject to decide whether to move or not (S1 or S2 depending on the paradigm). In both go conditions, a central alpha and beta energy decrease began after the go decision, reaching minimum values during the movement; it was followed by a beta post-movement increase, limited to the central contralateral area. In the no-go conditions, a marked fronto-central beta synchronization appeared after the decision not to move. In conclusion, our study was able to dissociate the beta oscillatory changes related to movement preparation and execution (central decrease/increase) from those associated with decision-making (medial frontal increase) and motor inhibition (fronto-central increase).
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Affiliation(s)
- M Alegre
- Clinical Neurophysiology Section, Department of Neurology, Clínica Universitaria and Foundation for Applied Medical Research, Universidad de Navarra, 31008, Pamplona, Spain
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Salvador J, Iriarte J, Silva C, Gómez Ambrosi J, Díez Caballero A, Frühbeck G. [The obstructive sleep apnoea syndrome in obesity: a conspirator in the shadow]. Rev Med Univ Navarra 2004; 48:55-62. [PMID: 15382614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The obstructive sleep apnoea syndrome (OSAS) is caused by upper airway collapse during sleep. These episodes are associated with recurrent oxyhaemoglobin desaturations and arousals which lead to disruption of the sleep pattern and cognitive deterioration. Factors such as age, male sex, menopause, tobacco and alcohol consumption and anatomic abnormalities are demonstrated risk factors for OSAS development. Obesity, specially of abdominal type, is also a very strong predictor of OSAS, increasing the risk of apnoea by ten times. OSAS prevalence may reach 80% and 50% en males and females with morbid obesity respectively. OSAS induces sympathoexcitation, insulin resistance, renin-angiotensin system activation, oxidative stress, endothelial dysfunction, hypercoagulability and reduction of fibrinolysis leading to hypertension and increased cardiovascular risk. The best diagnostic procedure is polysomnography. Obesity treatment is followed by a dramatic improvement in OSAS. Weight loss of 10% results in reductions of apnoea index by 26%. Application of a positive pressure system is a very effective treatment for OSAS which reduces the apnoea index and improves cardiovascular risk and cognitive impairment.
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Affiliation(s)
- J Salvador
- Departamento de Endocrinología y Nutrición, Clínica Universitaria de Navarra, Facultad de Medicina, Universidad de Navarra, Pamplona.
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