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Linares IMP, Nardi AE, Guimarães FS, Arrais KC, Chagas MH, Osório FL, Hallak JE, Zuardi AW, Coimbra NC, Crippa JA. Increased body sway in phobic patients exposed to images of spiders. Braz J Psychiatry 2020; 43:477-483. [PMID: 33331404 PMCID: PMC8555649 DOI: 10.1590/1516-4446-2020-1466] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/12/2020] [Indexed: 11/22/2022]
Abstract
Objective: The aim of the present study was to analyze the body sway response in specific phobia (SP) patients and healthy controls while viewing neutral, phobic, and disgusting images. Methods: The participants’ heart rate (HR) and skin conductance were also recorded during the procedure. Nineteen patients with arachnophobia and 19 healthy volunteers matched by age, gender, and years of education underwent a postural control test on a stabilometric platform. Results: The platform recorded increased body sway in the SP group when exposed to spider images (SPI). The SP group presented increases in most parameters (SD, velocity, frequency, area, p ≤ 0.05) when viewing pictures of the SPI category. Psychometric measures of subjective anxiety (State-Trait Anxiety Inventory, STAI) and physiological states (HR; skin conductance responses; spontaneous fluctuations in skin conductance) showed increased anxiety (p ≤ 0.05) in the SP group compared to healthy volunteers. High anxiety levels were observed throughout the assessment, including the task of exposure to SPI (p ≤ 0.05). No significant effect or correlation was found between skin conductance and body sway measures (p > 0.05). Conclusions: The results of the postural control test suggest the occurrence of a defensive escape response in SP, in agreement with previous evidence.
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Affiliation(s)
- Ila M P Linares
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Antonio E Nardi
- Laboratório de Pânico e Respiração, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Francisco S Guimarães
- Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - Katia C Arrais
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Marcos H Chagas
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Flavia L Osório
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Jaime E Hallak
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Antonio W Zuardi
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Norberto C Coimbra
- Laboratório de Neuroanatomia e Neuropsicobiologia, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil.,Núcleo de Pesquisa em Neurobiologia das Emoções, Núcleos de Apoio à Pesquisa, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
| | - José A Crippa
- Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Institutos Nacionais de Ciência e Tecnologia, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
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Linares IMP, Guimaraes FS, Eckeli A, Crippa ACS, Zuardi AW, Souza JDS, Hallak JE, Crippa JAS. No Acute Effects of Cannabidiol on the Sleep-Wake Cycle of Healthy Subjects: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study. Front Pharmacol 2018; 9:315. [PMID: 29674967 PMCID: PMC5895650 DOI: 10.3389/fphar.2018.00315] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [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] [Received: 11/06/2017] [Accepted: 03/19/2018] [Indexed: 12/17/2022] Open
Abstract
Cannabidiol (CBD) is a component of Cannabis sativa that has a broad spectrum of potential therapeutic effects in neuropsychiatric and other disorders. However, few studies have investigated the possible interference of CBD on the sleep-wake cycle. The aim of the present study was to evaluate the effect of a clinically anxiolytic dose of CBD on the sleep-wake cycle of healthy subjects in a crossover, double-blind design. Twenty-seven healthy volunteers that fulfilled the eligibility criteria were selected and allocated to receive either CBD (300 mg) or placebo in the first night in a double-blind randomized design (one volunteer withdrew from the study). In the second night, the same procedure was performed using the substance that had not been administered in the previous occasion. CBD or placebo were administered 30 min before the start of polysomnography recordings that lasted 8 h. Cognitive and subjective measures were performed immediately after polysomnography to assess possible residual effects of CBD. The drug did not induce any significant effect (p > 0.05). Different from anxiolytic and antidepressant drugs such as benzodiazepines and selective serotonin reuptake inhibitors, acute administration of an anxiolytic dose of CBD does not seem to interfere with the sleep cycle of healthy volunteers. The present findings support the proposal that CBD do not alter normal sleep architecture. Future studies should address the effects of CBD on the sleep-wake cycle of patient populations as well as in clinical trials with larger samples and chronic use of different doses of CBD. Such studies are desirable and opportune.
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Affiliation(s)
- Ila M. P. Linares
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
| | - Francisco S. Guimaraes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Alan Eckeli
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
| | - Ana C. S. Crippa
- Department of Pediatrics, Neuropediatrics, Federal University of Paraná, Curitiba, Brazil
| | - Antonio W. Zuardi
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
| | - Jose D. S. Souza
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
| | - Jaime E. Hallak
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
| | - José A. S. Crippa
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- Instituto Nacional de Ciência e Tecnologia Translacional em Medicina, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasília, Brazil
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Perez WF, Kovac R, Linares IMP, Barbosa SFU, Gomes CT, Santos GARD, Almeida JHD. Utilizando o AAQ-II e o IRAP para prever a ocorrência de esquiva experiencial. ACTA ACUST UNITED AC 2017. [DOI: 10.31505/rbtcc.v19i3.1052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
O presente estudo teve por objetivo investigar se duas medidas relacionadas à esquiva experiencial (EE), o AAQ-II e um IRAP, seriam preditoras do desempenho dos participantes em uma tarefa de esquiva. O procedimento foi realizado em três fases realizadas individualmente: (1) aplicação de questionários (dentre eles o AAQ-II); (2) aplicação de um IRAP para medir EE; (3) realização de um teste de esquiva. Participantes adultos foram divididos em dois grupos, a depender do seu desempenho na última tarefa: Esquiva=0 (participantes que não esquivaram; n = 17) e Esquiva>2 (participantes que emitiram pelo menos 3 respostas de esquiva; n = 18). Não foram observadas diferenças entre os grupos com relação aos escores do AAQ-II. Por outro lado, os participantes do grupo Esquiva>2 responderam mais rapidamente para “verdadeiro” nas tentativas do IRAP que apresentavam frases e complementos relacionados à evitação de eventos privados negativos se comparado ao grupo Esquiva=0. Discute-se o efeito do responder relacional na ocorrência da EE.
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Chagas MHN, Oliveira THGF, Linares IMP, Balarini FB, Chagas NMS, Tumas V, Crippa JAS. Can anxiety increase tremors in patients with Parkinson’s disease? An experimental model. ARCH CLIN PSYCHIAT 2017. [DOI: 10.1590/0101-60830000000126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Linares IMP, Jackowski AP, Trzesniak CMF, Arrais KC, Chagas MHN, Sato JR, Santos AC, Hallak JEC, Zuardi AW, Nardi AE, Coimbra NC, Crippa JAS. Cortical thinning of the right anterior cingulate cortex in spider phobia: a magnetic resonance imaging and spectroscopy study. Brain Res 2014; 1576:35-42. [PMID: 24892191 DOI: 10.1016/j.brainres.2014.05.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 01/26/2014] [Revised: 05/21/2014] [Accepted: 05/26/2014] [Indexed: 10/25/2022]
Abstract
There a lack of consistent neuroimaging data on specific phobia (SP) and a need to assess volumetric and metabolic differences in structures implicated in this condition. The aim of this study is investigate possible metabolic (via (1)H MRS) and cortical thickness abnormalities in spider-phobic patients compared to healthy volunteers. Participants were recruited via public advertisement and underwent clinical evaluations and MRI scans. The study started in 2010 and the investigators involved were not blind in respect to patient groupings. The study was conducted at the Ribeirão Preto Medical School University Hospital of the University of São Paulo, Brazil. Patients with spider phobia (n=19) were matched to 17 healthy volunteers with respect to age, education and socio-economic status. The spider SP group fulfilled the diagnostic criteria for spider phobia according to the Structured Clinical Interview for DSM-IV. None of the participants had a history of neurological, psychiatric or other relevant organic diseases, use of prescribed psychotropic medication or substance abuse. All imaging and spectroscopy data were collected with a 3 T MRI scanner equipped with 25 mT gradient coils in 30-minute scans. The Freesurfer image analysis package and LC Model software were used to analyze data. The hypothesis being tested was formulated before the data collection (neural correlates of SP would include the amygdala, insula, anterior cingulate gyrus and others). The results indicated the absence of metabolic alterations, but thinning of the right anterior cingulate cortex (ACC) in the SP group when compared to the healthy control group (mean cortical thickness±SD: SP=2.11±0.45 mm; HC=2.16±0.42 mm; t (34)=3.19, p=0.001 [-35.45, 71.00, -23.82]). In spectroscopy, the ratios between N-acetylaspartate and creatine and choline levels were measured. No significant effect or correlation was found between MRS metabolites and scores in the Spider Phobia Questionnaire and Beck Anxiety Inventory (p>0.05). The ACC is known to be related to the cognitive processing of fear and anxiety and to be linked with the conditioning circuit. The MRS findings are preliminary and need more studies. The finding of reduced ACC thickness in SP is in agreement with evidence from previous functional neuroimaging studies and highlights the importance of this brain area in the pathophysiology of SP.
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Affiliation(s)
- I M P Linares
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil.
| | - A P Jackowski
- Laboratory of Interdisciplinary Neurosciences (LINC), Department of Psychiatry, Federal University of São Paulo, São Paulo, Brazil
| | - C M F Trzesniak
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
| | - K C Arrais
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
| | - M H N Chagas
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
| | - J R Sato
- Center of Mathematics, Computation and Cognition, Universidade Federal do ABC, Santo André, Brazil
| | - A C Santos
- Department of Medical Clinic Department, Division of Radiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - J E C Hallak
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
| | - A W Zuardi
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
| | - A E Nardi
- Laboratory of Panic and Respiration, Institute of Psychiatry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - N C Coimbra
- Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - J A S Crippa
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, National Institute for Translational Medicine (INCT, CNPq), Ribeirão Preto, São Paulo, Brazil
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Bergamaschi MM, Queiroz RHC, Chagas MHN, Linares IMP, Arrais KC, de Oliveira DCG, Queiroz ME, Nardi AE, Huestis MA, Hallak JEC, Zuardi AW, Moreira FA, Crippa JAS. Rimonabant effects on anxiety induced by simulated public speaking in healthy humans: a preliminary report. Hum Psychopharmacol 2014; 29:94-9. [PMID: 24424711 PMCID: PMC4539121 DOI: 10.1002/hup.2374] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/10/2013] [Accepted: 10/24/2013] [Indexed: 11/05/2022]
Abstract
OBJECTIVE We investigated the hypothesis that rimonabant, a cannabinoid antagonist/inverse agonist, would increase anxiety in healthy subjects during a simulation of the public speaking test. METHODS Participants were randomly allocated to receive oral placebo or 90 mg rimonabant in a double-blind design. Subjective effects were measured by Visual Analogue Mood Scale. Physiological parameters, namely arterial blood pressure and heart rate, also were monitored. RESULTS Twelve participants received oral placebo and 12 received 90 mg rimonabant. Rimonabant increased self-reported anxiety levels during the anticipatory speech and performance phase compared with placebo. Interestingly, rimonabant did not modulate anxiety prestress and was not associated with sedation, cognitive impairment, discomfort, or blood pressure changes. CONCLUSIONS Cannabinoid-1 antagonism magnifies the responses to an anxiogenic stimulus without interfering with the prestress phase. These data suggest that the endocannabinoid system may work on-demand to counteract the consequences of anxiogenic stimuli in healthy humans.
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Affiliation(s)
- Mateus M. Bergamaschi
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,Department of Clinical, Toxicological and Food Sciences Analysis, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil,Correspondence to: M. M. Bergamaschi, Ph.D, Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Neurociências e Ciências do Comportamento. Av. Bandeirantes, 3900-Hospital das Clínicas-Terceiro Andar, Monte Alegre, 14048–900-Ribeirão Preto, SP, Brazil. Tel: +55-16-3602-2703; Fax: +55-16-3635-0713
| | - Regina H. C. Queiroz
- Department of Clinical, Toxicological and Food Sciences Analysis, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Marcos H. N. Chagas
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Ila M. P. Linares
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Kátia C. Arrais
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Danielle C. G. de Oliveira
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Maria E. Queiroz
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Antonio E. Nardi
- CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil,Laboratory of Panic and Respiration, Institute of Psychiatry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marilyn A. Huestis
- Chemistry and Drug Metabolism, IRP, National Institute on Drug Abuse, NIH, Baltimore, MD, USA
| | - Jaime E. C. Hallak
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Antonio W. Zuardi
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
| | - Fabrício A. Moreira
- CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil,Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - José A. S. Crippa
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil,CNPq, National Institute for Translational Medicine (INCT-TM), Rio de Janeiro, Brazil
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Linares IMP, Trzesniak C, Chagas MHN, Hallak JEC, Nardi AE, Crippa JAS. Neuroimaging in specific phobia disorder: a systematic review of the literature. Braz J Psychiatry 2012; 34:101-111. [PMID: 22392396] [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] [Received: 08/03/2011] [Accepted: 10/12/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVE Specific phobia (SP) is characterized by irrational fear associated with avoidance of specific stimuli. In recent years, neuroimaging techniques have been used in an attempt to better understand the neurobiology of anxiety disorders. The objective of this study was to perform a systematic review of articles that used neuroimaging techniques to study SP. METHOD A literature search was conducted through electronic databases, using the keywords: imaging, neuroimaging, PET, spectroscopy, functional magnetic resonance, structural magnetic resonance, SPECT, MRI, DTI, and tractography, combined with simple phobia and specific phobia. One-hundred fifteen articles were found, of which 38 were selected for the present review. From these, 24 used fMRI, 11 used PET, 1 used SPECT, 2 used structural MRI, and none used spectroscopy. RESULT The search showed that studies in this area were published recently and that the neuroanatomic substrate of SP has not yet been consolidated. CONCLUSION In spite of methodological differences among studies, results converge to a greater activation in the insula, anterior cingulate cortex, amygdala, and prefrontal and orbitofrontal cortex of patients exposed to phobia-related situations compared to controls. These findings support the hypotheses of the hyperactivation of a neuroanatomic structural network involved in SP.
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Affiliation(s)
- Ila M P Linares
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, Universidade de São Paulo, São Paulo, Brazil.
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