Cited by 392Memory Processes and InfluencesMemory and Neural MechanismsCognitive Functions and Memory

Effects of Healthy Aging on Hippocampal and Rhinal Memory Functions: An Event-Related fMRI Study

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Daselaar, S. M., Fleck, M. S., Dobbins, I. G., Madden, D. J., Cabeza, R.·2005·Cerebral Cortex

Abstract

Event-related functional magnetic resonance imaging was used to study the effects of healthy aging on hippocampal and rhinal memory functions. Memory for past events can be based on retrieval accompanied by specific contextual details (recollection) or on the feeling that an event is old or new without the recovery of contextual details (familiarity). There is evidence that recollection is more dependent on hippocampus, whereas familiarity is more dependent on the rhinal cortex, and that healthy aging has greater effects on recollection than on familiarity. However, little evidence is available about the neural correlates of these effects. Here, we isolated activity associated with recollection and familiarity by distinguishing between linear and quasi-exponential "perceived oldness" functions derived from recognition confidence levels. The main finding was a double dissociation within the medial temporal lobes between recollection-related activity in hippocampus, which was reduced by aging, and familiarity-related activity in rhinal cortex, which was increased by aging. In addition, age dissociations were found within parietal and posterior midline regions. Finally, aging reduced functional connectivity within a hippocampal-retrosplenial/parietotemporal network but increased connectivity within a rhinal-frontal network. These findings indicate that older adults compensate for hippocampal deficits by relying more on rhinal cortex, possibly through a top-down frontal modulation. This finding has important clinical implications because early Alzheimer's disease impairs both hippocampus and rhinal cortex.

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Crossref · 10.1093/cercor/bhj112

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  • Cognitive decline, primarily in executive functioning and memory formation, is one of the most pronounced consequences of aging.

    “Cognitive decline, primarily in executive functioning and memory formation, is one of the most pronounced consequences of aging (Daselaar et al, 2006;Hedden and Gabrieli, 2004;Townsend et al, 2006).”

    From Microglia Priming with Aging and Stress (2017) · cites this paper as Daselaar et al, 2006

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Authors
Daselaar, S. M., Fleck, M. S., Dobbins, I. G., Madden, D. J., & Cabeza, R.
Affiliations
  • University of Amsterdam (NL)
  • Duke University (US)
Venue
Cerebral Cortex
Published
2005-12-28
Volume
16
Issue
12
Pages
1771-1782
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2162654011
Cited by
392
References
67
Citations by year
2026: 9 · 2025: 5 · 2024: 8 · 2023: 17 · 2022: 14 · 2021: 13 · 2020: 11 · 2019: 16 · 2018: 14 · 2017: 19 · 2016: 18 · 2015: 29 · 2014: 22 · 2013: 24 · 2012: 26
FWCI
11.07
Type
journal article
Language
en
Open access
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed (publishedVersion)
  • UvA-DARE (University of Amsterdam) (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
National Institute on Aging (R01AG019731, AG 19731, AG 11622, R01AG011622, R37AG002163)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
Keywords
healthy aging, hippocampus, rhinal cortex, recollection, familiarity, recognition memory, recognition confidence, medial temporal lobe, functional connectivity, Alzheimer's disease, older adults
MeSH terms
Adult, Aged, Aging, Behavior, Brain Mapping, Hippocampus, Humans, Magnetic Resonance Imaging, Memory, Neuropsychological Tests, ROC Curve, Entorhinal Cortex, Recognition, Psychology

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