Cited by 278Memory Processes and InfluencesMemory and Neural MechanismsCognitive Functions and Memory

Age-related differences in the functional connectivity of the hippocampus during memory encoding

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Grady, Cheryl L., McIntosh, Anthony R., Craik, Fergus I.M.·2003·Hippocampus

Abstract

The purpose of the current experiment was to examine the functional connectivity of the hippocampus during encoding in young and old adults, and the way in which this connectivity was related to recognition performance. Functional connectivity was defined as the correlation between activity in the hippocampus and activity in the rest of the brain, as measured by neuroimaging. During encoding of words and pictures of objects in young adults, hippocampal activity was correlated with activity in the ventral prefrontal and extrastriate regions, and increased activity in all these regions was associated with better recognition. In contrast, older adults showed correlations between hippocampal activity and the dorsolateral prefrontal and parietal regions, and positive correlations between activity in these regions and better memory performance. This ventral/dorsal distinction suggests a shift in the cognitive resources used with age from more perceptually based processes to those involved in executive and organizational functions. The results of this study provide evidence that aging is associated with alterations in hippocampal function, including how it is functionally connected with prefrontal cortex, and that these alterations have an impact on memory performance. Hippocampus 2003;13:572–586. © 2003 Wiley‐Liss, Inc.

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  1. Desimone R, Ungerleider LG. 1989. Neural mechanisms of visual pro- cessing in monkeys. In: Goodglass H, Damasio AR, editors. Hand- book of neuropsychology. Amsterdam: Elsevier. p 267-300.
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Authors
Grady, C. L., McIntosh, A. R., & Craik, F. I. M.
Affiliations
University of Toronto (CA)
Corresponding author
Grady, Cheryl L.
Venue
Hippocampus
Publisher
Wiley
Published
2003-01
Volume
13
Issue
5
Pages
572-586
ISSN
  • 1050-9631 (ISSN-L)
  • 1098-1063
OpenAlex
W2085791991
Cited by
277
References
104
Citations by year
2026: 7 · 2025: 5 · 2024: 3 · 2023: 16 · 2022: 9 · 2021: 8 · 2020: 8 · 2019: 13 · 2018: 9 · 2017: 11 · 2016: 9 · 2015: 15 · 2014: 15 · 2013: 11 · 2012: 10
FWCI
6.72
Type
journal article
Language
en
Open access
Locations
  • Hippocampus (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Centre for Addiction and Mental Health
  • University of Toronto
  • Canadian Institutes of Health Research (MOP14036)
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
functional connectivity, memory encoding, aging, older adults, recognition memory, ventral prefrontal cortex, dorsolateral prefrontal cortex, parietal cortex, extrastriate cortex, executive function, perceptual processing, age differences
MeSH terms
Adult, Aged, Aging, Brain Mapping, Cognition, Female, Hippocampus, Humans, Functional Laterality, Learning, Male, Memory, Memory Disorders, Middle Aged, Neural Pathways, Pattern Recognition, Visual, Photic Stimulation, Tomography, Emission-Computed, Neocortex

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