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Rosenau C, Köhler S, Soons LM, Anstey KJ, Brayne C, Brodaty H, Engedal K, Farina FR, Ganguli M, Livingston G, Lyketsos CG, Mangialasche F, Middleton LE, Rikkert MGMO, Peters R, Sachdev PS, Scarmeas N, Salbæk G, van Boxtel MPJ, Deckers K. Umbrella review and Delphi study on modifiable factors for dementia risk reduction. Alzheimers Dement 2024; 20:2223-2239. [PMID: 38159267 PMCID: PMC10984497 DOI: 10.1002/alz.13577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 01/03/2024]
Abstract
A 2013 systematic review and Delphi consensus study identified 12 modifiable risk and protective factors for dementia, which were subsequently merged into the "LIfestyle for BRAin health" (LIBRA) score. We systematically evaluated whether LIBRA requires revision based on new evidence. To identify modifiable risk and protective factors suitable for dementia risk reduction, we combined an umbrella review of systematic reviews and meta-analyses with a two-round Delphi consensus study. The review of 608 unique primary studies and opinions of 18 experts prioritized six modifiable factors: hearing impairment, social contact, sleep, life course inequalities, atrial fibrillation, and psychological stress. Based on expert ranking, hearing impairment, social contact, and sleep were considered the most suitable candidates for inclusion in updated dementia risk scores. As such, the current study shows that dementia risk scores need systematic updates based on emerging evidence. Future studies will validate the updated LIBRA score in different cohorts. HIGHLIGHTS: An umbrella review was combined with opinions of 18 dementia experts. Various candidate targets for dementia risk reduction were identified. Experts prioritized hearing impairment, social contact, and sleep. Re-assessment of dementia risk scores is encouraged. Future work should evaluate the predictive validity of updated risk scores.
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Affiliation(s)
- Colin Rosenau
- Alzheimer Centrum LimburgDepartment of Psychiatry and NeuropsychologySchool for Mental Health and Neuroscience (MHeNs)Maastricht UniversityMaastrichtthe Netherlands
| | - Sebastian Köhler
- Alzheimer Centrum LimburgDepartment of Psychiatry and NeuropsychologySchool for Mental Health and Neuroscience (MHeNs)Maastricht UniversityMaastrichtthe Netherlands
| | - Lion M. Soons
- Alzheimer Centrum LimburgDepartment of Psychiatry and NeuropsychologySchool for Mental Health and Neuroscience (MHeNs)Maastricht UniversityMaastrichtthe Netherlands
| | - Kaarin J. Anstey
- School of PsychologyUniversity of New South WalesKensingtonNew South WalesAustralia
- Neuroscience Research Australia (NeuRA)SydneyNew South WalesAustralia
- UNSW Ageing Futures InstituteKensingtonNew South WalesAustralia
| | - Carol Brayne
- Cambridge Public HealthUniversity of CambridgeCambridgeUK
| | - Henry Brodaty
- Centre for Healthy Brain Ageing (CHeBA)Discipline of Psychiatry and Mental HealthSchool of Clinical MedicineUniversity of New South WalesSydneyNew South WalesAustralia
| | - Knut Engedal
- Norwegian National Centre for Ageing and HealthVestfold Hospital TrustTønsbergNorway
| | - Francesca R. Farina
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
| | - Mary Ganguli
- Departments of PsychiatryNeurologyand EpidemiologySchool of Medicine and School of Public HealthUniversity of PittsburghPittsburghPennsylvaniaUSA
| | | | - Constantine G. Lyketsos
- Richman Family Precision Medicine Center of Excellence in Alzheimer's DiseaseJohns Hopkins BayviewJohns Hopkins MedicineBaltimoreMarylandUSA
| | - Francesca Mangialasche
- Division of Clinical GeriatricsDepartment of NeurobiologyCare Sciences and SocietyCenter for Alzheimer ResearchKarolinska InstitutetStockholmSweden
- Theme Inflammation and AgingMedical Unit AgingKarolinska University HospitalStockholmSweden
| | - Laura E. Middleton
- Department of Kinesiology and Health SciencesUniversity of WaterlooWaterlooOntarioCanada
- Schlegel‐UW Research Institute for AgingWaterlooOntarioCanada
| | - Marcel G. M. Olde Rikkert
- Department of Geriatric MedicineRadboud University Medical CenterNijmegenthe Netherlands
- Radboudumc Alzheimer CenterDonders Center of Medical NeurosciencesNijmegenthe Netherlands
| | - Ruth Peters
- UNSW Ageing Futures InstituteKensingtonNew South WalesAustralia
- The George Institute for Global HealthNewtownNew South WalesAustralia
- School of Biomedical SciencesUniversity of New South WalesKensingtonNew South WalesAustralia
| | - Perminder S. Sachdev
- Centre for Healthy Brain Ageing (CHeBA)Discipline of Psychiatry and Mental HealthSchool of Clinical MedicineUniversity of New South WalesSydneyNew South WalesAustralia
| | - Nikolaos Scarmeas
- 1st Department of NeurologyAiginition HospitalNational and Kapodistrian University of Athens Medical SchoolAthensGreece
- Department of NeurologyColumbia UniversityNew YorkNew YorkUSA
| | - Geir Salbæk
- Norwegian National Centre for Ageing and HealthVestfold Hospital TrustTønsbergNorway
- Department of Geriatric MedicineOslo University HospitalOsloNorway
- Institute of Clinical MedicineUniversity of OsloOsloNorway
| | - Martin P. J. van Boxtel
- Alzheimer Centrum LimburgDepartment of Psychiatry and NeuropsychologySchool for Mental Health and Neuroscience (MHeNs)Maastricht UniversityMaastrichtthe Netherlands
| | - Kay Deckers
- Alzheimer Centrum LimburgDepartment of Psychiatry and NeuropsychologySchool for Mental Health and Neuroscience (MHeNs)Maastricht UniversityMaastrichtthe Netherlands
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Hurstak E, Farina FR, Paasche-Orlow MK, Hahn EA, Henault LE, Moreno P, Weaver C, Marquez M, Serrano E, Thomas J, Griffith JW. COVID-19 Vaccine Confidence Mediates the Relationship between Health Literacy and Vaccination in a Diverse Sample of Urban Adults. Vaccines (Basel) 2023; 11:1848. [PMID: 38140251 PMCID: PMC10747333 DOI: 10.3390/vaccines11121848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
We sought to analyze the relationship between health literacy, confidence in COVID-19 vaccines, and self-reported vaccination. We hypothesized that the relationship between health literacy and vaccination would be mediated by vaccine confidence. We recruited (N = 271) English- and Spanish-speaking adults in Boston and Chicago from September 2018 to September 2021. We performed a probit mediation analysis to determine if confidence in COVID-19 vaccines and health literacy predicted self-reported vaccination. We hypothesized that the relationship between health literacy and vaccination would be mediated by vaccine confidence. Participants were on average 50 years old, 65% female, 40% non-Hispanic Black, 25% Hispanic, and 30% non-Hispanic White; 231 (85%) reported at least one COVID-19 vaccination. A higher mean vaccine confidence score (t = -7.9, p < 0.001) and higher health literacy (t = -2.2, p = 0.03) were associated with vaccination, but only vaccine confidence predicted vaccination in a multivariate model. Vaccine confidence mediated the relationship between health literacy and COVID-19 vaccination (mediated effects: 0.04; 95% CI [0.02, 0.08]). We found that using a simple tool to measure vaccine confidence identified people who declined or delayed COVID-19 vaccination in a diverse sample of adults with varying levels of health literacy. Simple short survey tools can be useful to identify people who may benefit from vaccine promotion efforts and evidence-based communication strategies.
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Affiliation(s)
- Emily Hurstak
- Section of General Internal Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02119, USA;
| | - Francesca R. Farina
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Michael K. Paasche-Orlow
- Department of Medicine, Tufts University School of Medicine, Tufts Medical Center, Boston, MA 02116, USA;
| | - Elizabeth A. Hahn
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Lori E. Henault
- Section of General Internal Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02119, USA;
| | - Patricia Moreno
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Claire Weaver
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Melissa Marquez
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Eloisa Serrano
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Jessica Thomas
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - James W. Griffith
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
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Farina FR, Regan J, Marquez M, An H, O'Loughlin P, Pavithra P, Taddeo M, Knight RC, Bennett M, Lenaert B, Griffith JW. Reducing fear and avoidance of memory loss improves mood and social engagement in community-based older adults: a randomized trial. BMC Geriatr 2023; 23:786. [PMID: 38030988 PMCID: PMC10688470 DOI: 10.1186/s12877-023-04470-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 11/09/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Alzheimer's disease and related dementias (ADRD) are among the most feared age-related conditions. The aim of this study was to evaluate a brief psychological intervention to promote adaptive coping in older adults experiencing heightened fear of ADRD and investigate positive downstream effects on health-related secondary outcomes, including frequency of reported memory failures, psychosocial functioning, and quality of life. METHODS Eighty-one older adults were recruited and randomized into REFRAME or active control intervention arms. Both groups received psycho-education and training in mindful monitoring of fears related to ADRD. The REFRAME group received an additional behavioral activation component intended to disrupt maladaptive avoidant coping (i.e., avoidance) strategies. Both groups completed 3-weeks of intervention exercises with accompanying questionnaires (baseline, mid- and post-intervention and 4-week follow-up). RESULTS Adherence was strong (> 75%). We observed a significant reduction in ADRD-related fear and avoidance in both groups. Significant reductions were also observed for frequency of self-reported memory failures, anxiety, and depression. Depression was significantly reduced in the REFRAME group compared to the control group. Significant increases in participants' ability to participate in social activities and well-being were also observed. CONCLUSIONS Findings suggest that a brief psychological intervention can mitigate ADRD-related fears and avoidant coping in older adults, and that benefits extend to broader health-related outcomes including anxiety, depression, social functioning, and well-being. Addressing ADRD-related fear has implications for healthy aging and risk reduction, as individuals may be more likely to engage in activities that are protective against ADRD but were previously avoided. TRIAL REGISTRATION https://clinicaltrials.gov/ct2/show/NCT04821960 .
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Affiliation(s)
- Francesca R Farina
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA.
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland.
| | - John Regan
- School of Psychology, Trinity College Dublin, Dublin, Ireland
| | - Melissa Marquez
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Hosanna An
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | | | | | - Michelle Taddeo
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Rachel C Knight
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Marc Bennett
- School of Psychology, University College Dublin, Dublin, Ireland
| | - Bert Lenaert
- Faculty of Psychology, Open University, Heerlen, The Netherlands
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - James W Griffith
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
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Gregory S, Booi L, Jenkins N, Bridgeman K, Muniz-Terrera G, Farina FR. Hormonal contraception and risk for cognitive impairment or Alzheimer's disease and related dementias in young women: a scoping review of the evidence. Front Glob Womens Health 2023; 4:1289096. [PMID: 38025979 PMCID: PMC10679746 DOI: 10.3389/fgwh.2023.1289096] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 09/05/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Women are significantly more likely to develop Alzheimer's disease and related dementias (ADRD) than men. Suggestions to explain the sex differences in dementia incidence have included the influence of sex hormones with little attention paid to date as to the effect of hormonal contraception on brain health. The aim of this scoping review is to evaluate the current evidence base for associations between hormonal contraceptive use by women and non-binary people in early adulthood and brain health outcomes. Methods A literature search was conducted using EMBASE, Medline and Google Scholar, using the keywords "hormonal contraception" OR "contraception" OR "contraceptive" AND "Alzheimer*" OR "Brain Health" OR "Dementia". Results Eleven papers were identified for inclusion in the narrative synthesis. Studies recruited participants from the UK, USA, China, South Korea and Indonesia. Studies included data from women who were post-menopausal with retrospective data collection, with only one study contemporaneously collecting data from participants during the period of hormonal contraceptive use. Studies reported associations between hormonal contraceptive use and a lower risk of ADRD, particularly Alzheimer's disease (AD), better cognition and larger grey matter volume. Some studies reported stronger associations with longer duration of hormonal contraceptive use, however, results were inconsistent. Four studies reported no significant associations between hormonal contraceptive use and measures of brain health, including brain age on MRI scans and risk of AD diagnosis. Discussion Further research is needed on young adults taking hormonal contraceptives, on different types of hormonal contraceptives (other than oral) and to explore intersections between sex, gender, race and ethnicity. Systematic Review Registration https://doi.org/10.17605/OSF.IO/MVX63, identifier: OSF.io: 10.17605/OSF.IO/MVX63.
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Affiliation(s)
- Sarah Gregory
- Edinburgh Dementia Prevention, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Laura Booi
- Memory and Aging Center, Global Brain Health Institute, Trinity College, Dublin, Ireland
- Centre for Dementia Research, School of Health, Leeds Beckett University, Leeds, United Kingdom
| | - Natalie Jenkins
- Edinburgh Dementia Prevention, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- School of Neuroscience and Psychology, University of Glasgow, Glasgow, United Kingdom
| | - Katie Bridgeman
- Edinburgh Dementia Prevention, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Graciela Muniz-Terrera
- Edinburgh Dementia Prevention, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Ohio University Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, United States
| | - Francesca R. Farina
- Memory and Aging Center, Global Brain Health Institute, Trinity College, Dublin, Ireland
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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Farina FR, Booi L, Occhipinti JA, Quoidbach V, Destrebecq F, Muniz-Terrera G, Eyre HA. Young Adult Brain Capital: A New Opportunity for Dementia Prevention. J Alzheimers Dis 2023:JAD230260. [PMID: 37302036 DOI: 10.3233/jad-230260] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 06/12/2023]
Abstract
The potential for future prevention of Alzheimer's disease and related dementias (ADRD) through healthy lifestyle change is spurring a positive brain health movement. However, most ADRD research continues to focus on mid- and later life. We lack evidence regarding risk exposure and protective factors in young adulthood, i.e., 18-39 years. Brain capital is an emerging framework that represents the combination of education, knowledge, skills, and optimal brain health that people accumulate over their lives. Building on this framework, we present a new model that focuses on optimizing brain health in young adulthood; namely, young adult brain capital. Increasing focus on younger populations is critical for developing citizens who are emotionally intelligent, resilient and can anticipate and cope with rapid changes in the world. By understanding the values that are key drivers and motivators for young adults, we can empower the next generation to become active agents in optimizing their brain health and reducing their risk for future ADRD.
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Affiliation(s)
- Francesca R Farina
- Feinberg School of Medicine, Department of Medical Social Sciences, Northwestern University, Chicago, IL, USA
- Global Brain Health Institute, Trinity College, Dublin, Ireland and University of California, USA
| | - Laura Booi
- Global Brain Health Institute, Trinity College, Dublin, Ireland and University of California, USA
- Centre for Dementia Research, School of Health, Leeds Beckett University, Leeds, UK
| | - Jo-An Occhipinti
- Mental Wealth Initiative, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, Australia
| | - Vinciane Quoidbach
- Mental Wealth Initiative, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, Australia
| | - Frédéric Destrebecq
- Mental Wealth Initiative, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, Australia
| | - Graciela Muniz-Terrera
- Ohio University Heritage College of Osteopathic Medicine, Warrensville Heights, OH, USA
- Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK
| | - Harris A Eyre
- Global Brain Health Institute, Trinity College, Dublin, Ireland and University of California, USA
- Mental Wealth Initiative, Brain and Mind Centre, Faculty of Medicine and Health, The University of Sydney, Australia
- IMPACT, The Institute for Mental and Physical Health and Clinical Translation, Deakin University, Geelong, Victoria, Australia
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
- Neuroscience-Inspired Policy Initiative, Organisation for Economic Co-operation and Development (OECD), Paris, France
- Center for Health and Bioscience, The Baker Institute for Public Policy, Rice University, Houston, TX, USA
- Meadows Mental Health Policy Institute, Dallas, TX, USA
- Euro-Mediterranean Economists Association, Barcelona, Catalonia, Spain
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Sciences Center at Houston, Houston, TX, USA
- Brain Capital Alliance, San Francisco, CA, USA
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Farina FR, Pavithra P, An H, Marquez M, O'Loughlin P, Regan J, Taddeo M, Bennett M, Lenaert B, Griffith JW. Validation of the Fear and Avoidance of Memory Loss scale in community-based older adults. Alzheimers Dement (Amst) 2023; 15:e12432. [PMID: 37101711 PMCID: PMC10123382 DOI: 10.1002/dad2.12432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/15/2023] [Accepted: 03/27/2023] [Indexed: 04/28/2023]
Abstract
Introduction Alzheimer's disease and related dementias (ADRD) are among the most feared conditions. However, research around ADRD-specific fear and avoidance behaviors is lacking. Here, we validated a novel measure of fear and avoidance specific to memory loss, the Fear and Avoidance of Memory Loss (FAM) scale, and examined associations between fear avoidance and psychosocial functioning in older adults. Methods We assessed FAM Scale internal reliability and concurrent validity, and candidate subscales across two samples (total N = 813). We then examined associations between fear avoidance and memory performance, anxiety, depressive symptoms, sleep, social functioning, and quality of life. Results We identified two subscales: fear and avoidance, which yielded strong psychometric validity. Higher fear was associated with memory failures and sleep disturbance. Higher avoidance was associated with memory failures, poorer verbal memory, reduced social functioning, and quality of life. Discussion We present the first measure of fear avoidance specific to memory loss. We propose that targeting fear avoidance can promote ADRD risk reduction and resiliency.
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Affiliation(s)
- Francesca R. Farina
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
- Global Brain Health InstituteTrinity College DublinDublinIreland
- School of PsychologyTrinity College DublinDublinIreland
| | | | - Hosanna An
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
| | - Melissa Marquez
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
| | | | - John Regan
- School of PsychologyTrinity College DublinDublinIreland
| | - Michelle Taddeo
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
| | - Marc Bennett
- School of PsychologyUniversity College DublinDublinIreland
| | - Bert Lenaert
- Faculty of PsychologyOpen UniversityHeerlenthe Netherlands
- Faculty of Health, Medicine and Life Sciences, Limburg Brain Injury CentreMaastricht UniversityMaastrichtthe Netherlands
| | - James W. Griffith
- Feinberg School of MedicineDepartment of Medical Social SciencesNorthwestern UniversityChicagoIllinoisUSA
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Farina FR, Pavithra P, Bennett MP, Lenaert B, Griffith JW. Fear and avoidance of memory loss is associated with lower levels of psychosocial functioning and quality of life in older adults. Alzheimers Dement 2022. [DOI: 10.1002/alz.063694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Francesca R. Farina
- Trinity College Dublin Dublin Ireland
- Global Brain Health Institute, Trinity College Dublin Dublin Ireland
| | | | | | - Bert Lenaert
- Maastricht University Maastricht Netherlands
- Open University Heerlen Netherlands
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Affiliation(s)
| | | | - Brian Lawlor
- Global Brain Health Institute, Trinity College Dublin, Ireland
| | - Laura Booi
- Leeds Beckett University, Leeds LS1 3HE, UK
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Barbey FM, Farina FR, Buick AR, Danyeli L, Dyer JF, Islam MN, Krylova M, Murphy B, Nolan H, Rueda-Delgado LM, Walter M, Whelan R. Neuroscience from the comfort of your home: Repeated, self-administered wireless dry EEG measures brain function with high fidelity. Front Digit Health 2022; 4:944753. [PMID: 35966140 PMCID: PMC9372279 DOI: 10.3389/fdgth.2022.944753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/07/2022] [Indexed: 12/21/2022] Open
Abstract
Recent advances have enabled the creation of wireless, “dry” electroencephalography (EEG) recording systems, and easy-to-use engaging tasks, that can be operated repeatedly by naïve users, unsupervised in the home. Here, we evaluated the validity of dry-EEG, cognitive task gamification, and unsupervised home-based recordings used in combination. Two separate cohorts of participants—older and younger adults—collected data at home over several weeks using a wireless dry EEG system interfaced with a tablet for task presentation. Older adults (n = 50; 25 females; mean age = 67.8 years) collected data over a 6-week period. Younger male adults (n = 30; mean age = 25.6 years) collected data over a 4-week period. All participants were asked to complete gamified versions of a visual Oddball task and Flanker task 5–7 days per week. Usability of the EEG system was evaluated via participant adherence, percentage of sessions successfully completed, and quantitative feedback using the System Usability Scale. In total, 1,449 EEG sessions from older adults (mean = 28.9; SD = 6.64) and 684 sessions from younger adults (mean = 22.87; SD = 1.92) were collected. Older adults successfully completed 93% of sessions requested and reported a mean usability score of 84.5. Younger adults successfully completed 96% of sessions and reported a mean usability score of 88.3. Characteristic event-related potential (ERP) components—the P300 and error-related negativity—were observed in the Oddball and Flanker tasks, respectively. Using a conservative threshold for inclusion of artifact-free data, 50% of trials were rejected per at-home session. Aggregation of ERPs across sessions (2–4, depending on task) resulted in grand average signal quality with similar Standard Measurement Error values to those of single-session wet EEG data collected by experts in a laboratory setting from a young adult sample. Our results indicate that easy-to-use task-driven EEG can enable large-scale investigations in cognitive neuroscience. In future, this approach may be useful in clinical applications such as screening and tracking of treatment response.
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Affiliation(s)
- Florentine M. Barbey
- School of Psychology, Trinity College Dublin, Dublin, Ireland
- Cumulus Neuroscience Ltd., Dublin, Ireland
| | - Francesca R. Farina
- School of Psychology, Trinity College Dublin, Dublin, Ireland
- Trinity College Institute of Neuroscience, Dublin, Ireland
| | | | - Lena Danyeli
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Clinical Affective Neuroimaging Laboratory, Magdeburg, Germany
| | - John F. Dyer
- Cumulus Neuroscience Ltd., Belfast, United Kingdom
| | | | - Marina Krylova
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
- Clinical Affective Neuroimaging Laboratory, Magdeburg, Germany
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Jena, Germany
| | | | - Hugh Nolan
- Cumulus Neuroscience Ltd., Dublin, Ireland
| | - Laura M. Rueda-Delgado
- Cumulus Neuroscience Ltd., Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland
| | - Martin Walter
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
- Department of Behavioral Neurology, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Clinical Affective Neuroimaging Laboratory, Magdeburg, Germany
- Department of Psychiatry and Psychotherapy, University of Tübingen, Tübingen, Germany
- Medical Faculty, Otto von Guericke University of Magdeburg, Magdeburg, Germany
| | - Robert Whelan
- School of Psychology, Trinity College Dublin, Dublin, Ireland
- Trinity College Institute of Neuroscience, Dublin, Ireland
- *Correspondence: Robert Whelan
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Farina FR, Bennett M, Griffith JW, Lenaert B. Fear of memory loss predicts increased memory failures and lower quality of life in older adults: preliminary findings from a fear-avoidance of memory loss (FAM) scale. Aging Ment Health 2022; 26:486-492. [PMID: 33291990 DOI: 10.1080/13607863.2020.1856780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Few studies have measured the impact of dementia-related fear on daily functioning, despite its clinical relevance. Our aim was to determine the relationship between fear-avoidance of memory loss, perceived memory failures and self-reported quality of life in a community based sample of older adults using a novel fear of memory loss (FAM) scale. METHODS Sixty-seven older adults (59-81 years) completed a 23-item self-report scale designed to capture multi-faceted components of fear of memory loss, known as the FAM scale. Perceived memory failures were measured using the Memory Failures Scale (MFS) and quality of life was assessed using the Older Person's Quality of Life scale (OPQOL-35). Participants also completed the Wechsler Memory Scale (WMS-IV) as a measure of objective memory performance and the Depression, Anxiety and Stress Scales (DASS) and the Geriatric Anxiety Inventory (GAI) as measures of general anxiety. RESULTS The FAM scale demonstrated strong internal consistency (Cronbach's α = .82) and concurrent validity with the GAI (r = .47). Three latent factors were observed: (1) fear-avoidance, (2) problematic beliefs and (3) affective resilience. After adjusting for objective memory performance and general anxiety, higher fear-avoidance significantly predicted increased perceived memory failures (p = .014) and reduced quality of life (p = .033). CONCLUSIONS Fear of memory loss predicts increased perceived memory failures and lower self-reported quality of life in a community sample of older adults. Based on these findings, we propose a preliminary fear-avoidance model that explains the development and maintenance of dementia-related functional disability in terms of psychological processes.
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Affiliation(s)
- F R Farina
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - M Bennett
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
- Cognition and Brain Sciences Unit, Medical Research Council, Cambridge, UK
| | - J W Griffith
- Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - B Lenaert
- School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands
- Limburg Brain Injury Centre, Limburg, The Netherlands
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11
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Farina FR, Bennett MP, Griffith JW, Lenaert B. Fear of memory decline predicts lower quality of life and increased memory failures in older adults: Preliminary findings from a novel fear‐avoidance of memory decline scale. Alzheimers Dement 2020. [DOI: 10.1002/alz.047271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Marc P Bennett
- Trinity College Dublin Dublin Ireland
- University of Cambridge Cambridge United Kingdom
| | | | - Bert Lenaert
- Maastricht University Maastricht Netherlands
- Limburg Brain Injury Centre Maastricht Netherlands
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12
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Farina FR, Commins S. Hippocampal and prefrontal contributions to memory retrieval: Examination of immediate early gene, NMDA receptor and environmental interactions. Eur J Neurosci 2020; 52:2982-2994. [PMID: 32365416 DOI: 10.1111/ejn.14768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/07/2019] [Accepted: 04/27/2020] [Indexed: 11/28/2022]
Abstract
Animals can use a range of strategies to recall important locations. These include simple stimulus-response strategies and more complex spatial (place) strategies, which are thought to have distinct neural substrates. The hippocampus-and NMDA receptor activation therein-is considered to be crucial for spatial, but not response strategies. The medial prefrontal cortex has also been implicated in memory retrieval; however, evidence concerning its specific role is equivocal. Both hippocampal and prefrontal regions have been associated with flexible behavioural responding (e.g. when task demands change). Here, we investigated the use of spatial and non-spatial strategies in the Morris water maze and their associated brain areas in rats using immediate early gene (IEG) imaging of Zif268 and c-Fos. Specifically, we charted the involvement of hippocampal and prefrontal subregions during retrieval of spatial and non-spatial memories. Behavioural flexibility was also examined using intact and partial cue configurations during recall. Results indicated that regions of both the hippocampus (area CA3) and prefrontal cortex (anterior cingulate cortex) were preferentially engaged in spatial memory recall compared to response learning. In addition, both spatial and non-spatial memories were dependent on NMDA receptor activation. MK801 impaired recall performance across all groups and reduced IEG activation across hippocampal and prefrontal regions. Finally, IEG results revealed divergent patterns of Zif268 and c-Fos activity and support the suggestion that Zif268 plays a functional role in the recall of long-term memories.
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Affiliation(s)
- Francesca R Farina
- Department of Psychology, Maynooth University, Maynooth, Co. Kildare, Ireland.,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - Seán Commins
- Department of Psychology, Maynooth University, Maynooth, Co. Kildare, Ireland
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13
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Farina FR, Greene CM. Examining the effects of memory specificity and perceptual load on susceptibility to misleading information. Appl Cognit Psychol 2020. [DOI: 10.1002/acp.3669] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Francesca R. Farina
- School of Psychology University College Dublin Dublin Ireland
- Trinity College Institute of Neuroscience Trinity College Dublin Dublin Ireland
| | - Ciara M. Greene
- School of Psychology University College Dublin Dublin Ireland
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14
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Farina FR, Emek-Savaş DD, Rueda-Delgado L, Boyle R, Kiiski H, Yener G, Whelan R. A comparison of resting state EEG and structural MRI for classifying Alzheimer's disease and mild cognitive impairment. Neuroimage 2020; 215:116795. [PMID: 32278090 DOI: 10.1016/j.neuroimage.2020.116795] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 05/16/2019] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's disease (AD) is the leading cause of dementia, accounting for 70% of cases worldwide. By 2050, dementia prevalence will have tripled, with most new cases occurring in low- and middle-income countries. Mild cognitive impairment (MCI) is a stage between healthy aging and dementia, marked by cognitive deficits that do not impair daily living. People with MCI are at increased risk of dementia, with an average progression rate of 39% within 5 years. There is urgent need for low-cost, accessible and objective methods to facilitate early dementia detection. Electroencephalography (EEG) has potential to address this need due to its low cost and portability. Here, we collected resting state EEG, structural MRI (sMRI) and rich neuropsychological data from older adults (55+ years) with AD, amnestic MCI (aMCI) and healthy controls (~60 per group). We evaluated a range of candidate EEG markers (i.e., frequency band power and functional connectivity) for AD and aMCI classification and compared their performance with sMRI. We also tested a combined EEG and cognitive classification model (using Mini-Mental State Examination; MMSE). sMRI outperformed resting state EEG at classifying AD (AUCs = 1.00 vs 0.76, respectively). However, both EEG and sMRI were only moderately good at distinguishing aMCI from healthy aging (AUCs = 0.67-0.73), and neither method achieved sensitivity above 70%. The addition of EEG to MMSE scores had no added benefit relative to MMSE scores alone. This is the first direct comparison of EEG and sMRI for classification of AD and aMCI.
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Affiliation(s)
- F R Farina
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland.
| | - D D Emek-Savaş
- Department of Psychology, Faculty of Letters, Dokuz Eylul University, Izmir, 35160, Turkey; Department of Neurosciences, Institute of Health Sciences, Dokuz Eylul University, Izmir, 35340, Turkey; Global Brain Health Institute, Trinity College Dublin, Dublin 2, Ireland
| | - L Rueda-Delgado
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - R Boyle
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - H Kiiski
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - G Yener
- Department of Neurosciences, Institute of Health Sciences, Dokuz Eylul University, Izmir, 35340, Turkey; Department of Neurology, Dokuz Eylul University Medical School, Izmir, 35340, Turkey
| | - R Whelan
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland; Global Brain Health Institute, Trinity College Dublin, Dublin 2, Ireland.
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15
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Kiiski H, Bennett M, Rueda-Delgado LM, Farina FR, Knight R, Boyle R, Roddy D, Grogan K, Bramham J, Kelly C, Whelan R. EEG spectral power, but not theta/beta ratio, is a neuromarker for adult ADHD. Eur J Neurosci 2020; 51:2095-2109. [PMID: 31834950 DOI: 10.1111/ejn.14645] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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: 11/28/2019] [Accepted: 12/05/2019] [Indexed: 12/14/2022]
Abstract
Adults with attention-deficit/hyperactivity disorder (ADHD) have been described as having altered resting-state electroencephalographic (EEG) spectral power and theta/beta ratio (TBR). However, a recent review (Pulini et al. 2018) identified methodological errors in neuroimaging, including EEG, ADHD classification studies. Therefore, the specific EEG neuromarkers of adult ADHD remain to be identified, as do the EEG characteristics that mediate between genes and behaviour (mediational endophenotypes). Resting-state eyes-open and eyes-closed EEG was measured from 38 adults with ADHD, 45 first-degree relatives of people with ADHD and 51 unrelated controls. A machine learning classification analysis using penalized logistic regression (Elastic Net) examined if EEG spectral power (1-45 Hz) and TBR could classify participants into ADHD, first-degree relatives and/or control groups. Random-label permutation was used to quantify any bias in the analysis. Eyes-open absolute and relative EEG power distinguished ADHD from control participants (area under receiver operating characteristic = 0.71-0.77). The best predictors of ADHD status were increased power in delta, theta and low-alpha over centro-parietal regions, and in frontal low-beta and parietal mid-beta. TBR did not successfully classify ADHD status. Elevated eyes-open power in delta, theta, low-alpha and low-beta distinguished first-degree relatives from controls (area under receiver operating characteristic = 0.68-0.72), suggesting that these features may be a mediational endophenotype for adult ADHD. Resting-state EEG spectral power may be a neuromarker and mediational endophenotype of adult ADHD. These results did not support TBR as a diagnostic neuromarker for ADHD. It is possible that TBR is a characteristic of childhood ADHD.
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Affiliation(s)
- Hanni Kiiski
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Marc Bennett
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,Medical Research Council- Cognition and Brain Sciences Unit, University of Cambridge, UK
| | | | - Francesca R Farina
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Rachel Knight
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Rory Boyle
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Darren Roddy
- Department of Psychiatry, Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,Department of Physiology, School of Medicine, University College Dublin, Dublin, Ireland
| | - Katie Grogan
- UCD School of Psychology, University College Dublin, Dublin, Ireland
| | - Jessica Bramham
- UCD School of Psychology, University College Dublin, Dublin, Ireland
| | - Clare Kelly
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Robert Whelan
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
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16
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Farina FR, Pragulbickaitė G, Bennett M, Judd C, Walsh K, Mitchell S, O'Connell RG, Whelan R. Contralateral delay activity is not a robust marker of cognitive function in older adults at risk of mild cognitive impairment. Eur J Neurosci 2019; 51:2367-2375. [PMID: 31856354 DOI: 10.1111/ejn.14652] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 11/27/2022]
Abstract
Contralateral delay activity (CDA) has been proposed as a pre-clinical neural marker for mild cognitive impairment (MCI). However, existing evidence is limited to one study with a small sample size (n = 24). Our aim was to extend previous work by investigating the relationship between the CDA and MCI risk in a large sample of older adults (n = 76). We used a regression approach to determine whether (and when) CDA amplitude predicted MCI risk, as indexed by the Montreal Cognitive Assessment (MoCA). CDA amplitude from ~300-500 and ~800-900 ms predicted MoCA performance. However, significant effects were only observed for specific electrodes (P5/P6 and CP3/CP4, but not PO7/PO8) and the nature of the relationship between the CDA and MoCA scores differed across time and according to set size. Bayesian regression analysis indicated partial evidence in favour of the null hypothesis (BF10 values = 4-1.18). Contrary to previous results, our findings suggest that the CDA may not a robust marker of MCI risk. More broadly, our results highlight the difficulty in identifying at-risk individuals, particularly as MCI is a heterogeneous, unstable condition. Future research should prioritise longitudinal approaches in order to track the progression of the CDA and its association with cognitive decline in later life.
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Affiliation(s)
- Francesca R Farina
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | | | - Marc Bennett
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,MRC- Cognition and Brain Science Unit, University of Cambridge, Cambridge, UK
| | - Cian Judd
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Kevin Walsh
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Samantha Mitchell
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Redmond G O'Connell
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Robert Whelan
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,Global Health Brain Institute, Trinity College Dublin, Dublin, Ireland
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17
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Farina FR, Barry TJ, Damme I, Hie T, Raes F. Depression diagnoses, but not individual differences in depression symptoms, are associated with reduced autobiographical memory specificity. Br J Clin Psychol 2018; 58:173-186. [DOI: 10.1111/bjc.12207] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/05/2018] [Indexed: 11/27/2022]
Affiliation(s)
| | - Tom J. Barry
- The University of Hong Kong Hong Kong
- The Institute of Psychiatry, Psychology & Neuroscience King's College London UK
| | - Ilse Damme
- University of Hasselt Belgium
- University of Leuven Belgium
| | - Thijs Hie
- University of Leuven Belgium
- Centre for Mental Health Haacht Belgium
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18
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Farina FR, Mitchell KJ, Roche RAP. Synaesthesia lost and found: two cases of person- and music-colour synaesthesia. Eur J Neurosci 2017; 45:472-477. [PMID: 27893181 DOI: 10.1111/ejn.13492] [Citation(s) in RCA: 7] [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: 09/12/2016] [Revised: 11/17/2016] [Accepted: 11/23/2016] [Indexed: 11/30/2022]
Abstract
Synaesthesia is a developmental condition involving cross-communication between sensory modalities or substreams whereby an inducer (e.g. a sound) automatically evokes a concurrent percept in another modality (e.g. a colour). Whether this condition arises due to atypical structural connectivity (e.g., between normally unconnected cortical areas) or altered neurochemistry remains a central question. We report the exceptional cases of two synaesthetes - subjects AB and CD - both of whom experience coloured auras around individuals, as well as coloured perceptions in response to music. Both subjects have, in recent years, suffered a complete loss or reduction of their synaesthetic experiences, one (AB) through successive head traumas, including a lightning strike, followed by a number of medications, and the other (CD) while taking anxiolytic medications. Using semi-structured interviews and data from the Synaesthesia Battery and a colourpicker task, we characterize the phenomenological characteristics of their pre-loss synaesthesia, as well as the subsequent restoration of each subject's synaesthetic experiences (in the months post-trauma for AB, and after cessation of medication for CD). Even after years of suppression, the patterns of associations were highly consistent with those experienced pre-injury. The phenomenological experience of synaesthesia can, thus, like most conscious experiences, be modulated by pharmacologically diverse medications or head injury. However, the underlying neural substrates mediating specific synaesthetic pairings appear remarkably 'hard-wired' and can persist over very long periods even under conditions that alter or completely suppress the conscious synaesthetic experience itself.
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Affiliation(s)
| | - Kevin J Mitchell
- Trinity College Institute of Neuroscience and Smurfit Institute of Genetics, University of Dublin, Trinity College, Dublin 2, Ireland
| | - Richard A P Roche
- Department of Psychology, Maynooth University, Maynooth, Co Kildare, Ireland
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19
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Farina FR, Commins S. Differential expression of immediate early genes Zif268 and c-Fos in the hippocampus and prefrontal cortex following spatial learning and glutamate receptor antagonism. Behav Brain Res 2016; 307:194-8. [DOI: 10.1016/j.bbr.2016.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/29/2016] [Accepted: 04/02/2016] [Indexed: 12/22/2022]
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