Neural correlates of resilience to the effects of hippocampal atrophy on memory
Introduction: Cognitive reserve can be defined as a property of the brain that enables an individual to sustain cognitive performance in spite of age-related neural changes. This study uses brain imaging to identify which cognitive reserve mechanisms protect against the detrimental effect of hippoca...
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doaj-44ee1215bfd3467ebb38cc030f6d3a4c2020-12-23T04:59:41ZengElsevierNeuroImage: Clinical2213-15822021-01-0129102526Neural correlates of resilience to the effects of hippocampal atrophy on memorySylvie Belleville0Samira Mellah1Simon Cloutier2Thien Thanh Dang-Vu3Simon Duchesne4Samantha Maltezos5Natalie Phillips6Carol Hudon7Research Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, Canada; Department of Psychology, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent d’Indy, Montreal, QC H2V 2S9, Canada; Corresponding author at: Research Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, Canada.Research Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, CanadaResearch Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, Canada; Department of Psychology, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent d’Indy, Montreal, QC H2V 2S9, CanadaResearch Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, Canada; Department of Health, Kinesiology and Applied Physiology, Concordia University, 7141 Sherbrooke Street West, Montreal, QC H4B 1R6, CanadaDepartment of Radiology, Université Laval, and CERVO Brain Research Center, Institut Universitaire en santé mentale de Québec, 2601 Chemin de la Canardière, Quebec City, QC G1J 2G3, CanadaResearch Center, Institut Universitaire de Gériatrie de Montréal. 4565 Queen Mary Rd, Montreal, QC H3W 1W5, Canada; Department of Psychology, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent d’Indy, Montreal, QC H2V 2S9, CanadaDepartment of Psychology, Concordia University, 1455 Maisonneuve Boulevard West, Montreal, QC H3G 1M8, CanadaDepartment of Radiology, Université Laval, and CERVO Brain Research Center, Institut Universitaire en santé mentale de Québec, 2601 Chemin de la Canardière, Quebec City, QC G1J 2G3, CanadaIntroduction: Cognitive reserve can be defined as a property of the brain that enables an individual to sustain cognitive performance in spite of age-related neural changes. This study uses brain imaging to identify which cognitive reserve mechanisms protect against the detrimental effect of hippocampal atrophy on associative memory. Methods: The study included 108 older adults from the Quebec Consortium for the early identification of Alzheimer’s disease. They received a magnetic resonance imaging examination to measure memory-related activations and hippocampal volume. Participants also completed a reserve-proxy questionnaire, and received a comprehensive clinical assessment. Results: Higher scores on the reserve questionnaire were associated with more activation in the right inferior temporal and left occipital fusiform gyri. The activation of the right temporal gyrus moderated the relationship between the volume of the hippocampus and face-name memory. A smaller volume was associated with weaker memory in participants with lower activation, but not in those with greater activation. Discussion: Recruitment of the temporal lobe protects against the detrimental effect of hippocampal atrophy on associative memory and contributes to cognitive reserve.http://www.sciencedirect.com/science/article/pii/S2213158220303636Cognitive reserveAgingSubjective cognitive declineMild cognitive impairmentHippocampal atrophyAssociative memory |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sylvie Belleville Samira Mellah Simon Cloutier Thien Thanh Dang-Vu Simon Duchesne Samantha Maltezos Natalie Phillips Carol Hudon |
spellingShingle |
Sylvie Belleville Samira Mellah Simon Cloutier Thien Thanh Dang-Vu Simon Duchesne Samantha Maltezos Natalie Phillips Carol Hudon Neural correlates of resilience to the effects of hippocampal atrophy on memory NeuroImage: Clinical Cognitive reserve Aging Subjective cognitive decline Mild cognitive impairment Hippocampal atrophy Associative memory |
author_facet |
Sylvie Belleville Samira Mellah Simon Cloutier Thien Thanh Dang-Vu Simon Duchesne Samantha Maltezos Natalie Phillips Carol Hudon |
author_sort |
Sylvie Belleville |
title |
Neural correlates of resilience to the effects of hippocampal atrophy on memory |
title_short |
Neural correlates of resilience to the effects of hippocampal atrophy on memory |
title_full |
Neural correlates of resilience to the effects of hippocampal atrophy on memory |
title_fullStr |
Neural correlates of resilience to the effects of hippocampal atrophy on memory |
title_full_unstemmed |
Neural correlates of resilience to the effects of hippocampal atrophy on memory |
title_sort |
neural correlates of resilience to the effects of hippocampal atrophy on memory |
publisher |
Elsevier |
series |
NeuroImage: Clinical |
issn |
2213-1582 |
publishDate |
2021-01-01 |
description |
Introduction: Cognitive reserve can be defined as a property of the brain that enables an individual to sustain cognitive performance in spite of age-related neural changes. This study uses brain imaging to identify which cognitive reserve mechanisms protect against the detrimental effect of hippocampal atrophy on associative memory. Methods: The study included 108 older adults from the Quebec Consortium for the early identification of Alzheimer’s disease. They received a magnetic resonance imaging examination to measure memory-related activations and hippocampal volume. Participants also completed a reserve-proxy questionnaire, and received a comprehensive clinical assessment. Results: Higher scores on the reserve questionnaire were associated with more activation in the right inferior temporal and left occipital fusiform gyri. The activation of the right temporal gyrus moderated the relationship between the volume of the hippocampus and face-name memory. A smaller volume was associated with weaker memory in participants with lower activation, but not in those with greater activation. Discussion: Recruitment of the temporal lobe protects against the detrimental effect of hippocampal atrophy on associative memory and contributes to cognitive reserve. |
topic |
Cognitive reserve Aging Subjective cognitive decline Mild cognitive impairment Hippocampal atrophy Associative memory |
url |
http://www.sciencedirect.com/science/article/pii/S2213158220303636 |
work_keys_str_mv |
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