Cited by 65Dementia and Cognitive Impairment ResearchMemory Processes and InfluencesIdentity, Memory, and Therapy

Evolution of autobiographical memory impairments in Alzheimer’s disease and frontotemporal dementia—a longitudinal neuroimaging study

Irish, Muireann, Landin-Romero, Ramon, Mothakunnel, Annu, Ramanan, Siddharth, Hsieh, Sharpley, Hodges, John R., Piguet, Olivier·2018·Neuropsychologia

Abstract

Compromised autobiographical memory (ABM) retrieval is well established in dementia, attributable to degeneration of a core memory brain network. It remains unclear, however, how the progressive spread of atrophy with advancing disease severity impacts ABM retrieval across life epochs. To this end, we conducted a longitudinal study of recent and remote ABM in Alzheimer's disease (AD, n =11), and a frontotemporal lobar degeneration group (FTD, n =13) comprising 7 behavioral variant FTD and 6 semantic dementia patients, in comparison with 23 healthy older Controls. Patients were re-assessed approximately one year following their initial visit and underwent repeat testing and brain imaging. Linear mixed modeling neuroimaging analyses explored disease-specific cortical changes driving ABM alterations over time. AD patients showed comparable ABM profiles across assessment periods however, follow-up performance correlated strongly with lateral temporal lobe integrity. In contrast, recent ABMs were disproportionately disrupted at follow-up relative to baseline in the FTD group, attributable to cortical thinning in posterior brain regions, including the right posterior cingulate cortex. Our findings offer new insights regarding the potential time-specific role of discrete cortical regions in ABM retrieval and the differential fate of formerly evocative memories with advancing disease severity in dementia syndromes.

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Crossref · 10.1016/j.neuropsychologia.2017.03.014

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Authors
Irish, M., Landin-Romero, R., Mothakunnel, A., Ramanan, S., Hsieh, S., Hodges, J. R., & Piguet, O.
Affiliations
The University of Sydney (AU)
Corresponding author
Irish, Muireann
Venue
Neuropsychologia
Publisher
Elsevier BV
Published
2018-02
Volume
110
Pages
14-25
ISSN
0028-3932 (ISSN-L)
OpenAlex
W2593419528
Cited by
65
References
88
Citations by year
2026: 6 · 2025: 3 · 2024: 7 · 2023: 4 · 2022: 6 · 2021: 7 · 2020: 8 · 2019: 10 · 2018: 6 · 2017: 8
FWCI
7.18
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropsychologia (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Social Sciences › Psychology › Developmental and Educational Psychology › Identity, Memory, and Therapy
Keywords
autobiographical memory, Alzheimer's disease, frontotemporal lobar degeneration, behavioral variant frontotemporal dementia, semantic dementia, memory retrieval, cortical thinning, posterior cingulate cortex, lateral temporal lobe, disease progression
MeSH terms
Aged, Alzheimer Disease, Atrophy, Brain, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Memory Disorders, Middle Aged, Disease Progression, Frontotemporal Dementia, Neuroimaging, Memory, Episodic

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