Cited by 191Memory Processes and InfluencesMemory and Neural MechanismsCognitive Functions and Memory

Medial temporal lobe activity during source retrieval reflects information type, not memory strength

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Diana, Rachel A., Yonelinas, Andrew P., Ranganath, Charan·2010·Journal of Cognitive Neuroscience

Abstract

The medial temporal lobes (MTLs) are critical for episodic memory but the functions of MTL subregions are controversial. According to memory strength theory, MTL subregions collectively support declarative memory in a graded manner. In contrast, other theories assert that MTL subregions support functionally distinct processes. For instance, one view is that perirhinal cortex (PRc) processes item information, parahippocampal cortex (PHc) processes context information, and the hippocampus binds item and context. Here, we report two experiments that tested competing predictions from these models. In these studies, subjects encoded color-word associations by imagining color either as a contextual association (context detail condition) or as a feature of the item to be encoded (item detail condition). Results showed that encoding color information as an item detail improved source recognition in amnesic patients with recollection deficits. Furthermore, event-related fMRI data from healthy subjects revealed PRc activation associated with successful retrieval of item details, whereas activation in the hippocampus and PHc was associated with recollection-based source retrieval. The qualitatively different patterns of results observed in PRc and hippocampus/PHc are inconsistent with a memory strength account and are consistent with the idea that different MTL regions process different types of episodic information.

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Authors
Diana, R. A., Yonelinas, A. P., & Ranganath, C.
Affiliations
University of California, Davis (US)
Venue
Journal of Cognitive Neuroscience
Publisher
MIT Press
Published
2010-08-01
Volume
22
Issue
8
Pages
1808-1818
ISSN
  • 0898-929X (ISSN-L)
  • 1530-8898
OpenAlex
W2099171807
Cited by
191
References
47
Citations by year
2026: 3 · 2025: 3 · 2024: 8 · 2023: 8 · 2022: 4 · 2021: 7 · 2020: 10 · 2019: 16 · 2018: 14 · 2017: 13 · 2016: 8 · 2015: 18 · 2014: 14 · 2013: 13 · 2012: 22
FWCI
8.39
Type
journal article
Language
en
Open access
Locations
  • Journal of Cognitive Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • University of California, Davis
  • National Institute of Mental Health (MH079621, K99MH083945, MH059352, MH 068721, R01MH083734, R01MH068721, R01MH059352, F32MH079621)
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
medial temporal lobe, episodic memory, source memory, recollection, perirhinal cortex, parahippocampal cortex, hippocampus, amnesia, event-related fMRI
MeSH terms
Adult, Amnesia, Brain Mapping, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Neuropsychological Tests, Oxygen, Mental Recall, ROC Curve, Temporal Lobe, Recognition, Psychology

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