Cited by 601Memory Processes and InfluencesMemory and Neural MechanismsIdentity, Memory, and Therapy

Remembering one year later: role of the amygdala and the medial temporal lobe memory system in retrieving emotional memories

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Dolcos, Florin, LaBar, Kevin S., Cabeza, Roberto·2005·Proceedings of the National Academy of Sciences

Abstract

The memory-enhancing effect of emotion can be powerful and long-lasting. Most studies investigating the neural bases of this phenomenon have focused on encoding and early consolidation processes, and hence little is known regarding the contribution of retrieval processes, particularly after lengthy retention intervals. To address this issue, we used event-related functional MRI to measure neural activity during the retrieval of emotional and neutral pictures after a retention interval of 1 yr. Retrieval activity for emotional and neutral pictures was separately analyzed for successfully (hits) vs. unsuccessfully (misses) retrieved items and for responses based on recollection vs. familiarity. Recognition performance was better for emotional than for neutral pictures, and this effect was found only for recollection-based responses. Successful retrieval of emotional pictures elicited greater activity than successful retrieval of neutral pictures in the amygdala, entorhinal cortex, and hippocampus. Moreover, in the amygdala and hippocampus, the emotion effect was greater for recollection than for familiarity, whereas in the entorhinal cortex, it was similar for both forms of retrieval. These findings clarify the role of the amygdala and the medial temporal lobe memory regions in recollection and familiarity of emotional memory after lengthy retention intervals.

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Crossref · 10.1073/pnas.0409848102

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Authors
Dolcos, F., LaBar, K. S., & Cabeza, R.
Affiliations
University of Alberta (CA)
Corresponding author
Dolcos, Florin
Venue
Proceedings of the National Academy of Sciences
Published
2005-02-09
Volume
102
Issue
7
Pages
2626-2631
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2158056477
Cited by
601
References
57
Citations by year
2026: 13 · 2025: 21 · 2024: 20 · 2023: 21 · 2022: 14 · 2021: 33 · 2020: 20 · 2019: 43 · 2018: 28 · 2017: 34 · 2016: 24 · 2015: 28 · 2014: 37 · 2013: 33 · 2012: 30
FWCI
15.89
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (0239614)
  • University of Alberta
  • National Institutes of Health (AG19731, R01 AG19731)
  • National Institute on Aging (R01AG019731, R01 AG19731)
  • National Institute on Drug Abuse (R01DA014094, R01 DA14094)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Developmental and Educational Psychology › Identity, Memory, and Therapy
Keywords
emotional memory, memory retrieval, amygdala, medial temporal lobe, recollection, familiarity, recognition memory, entorhinal cortex, hippocampus, long-term retention, emotional enhancement of memory, image memory
MeSH terms
Adult, Amygdala, Emotions, Female, Humans, Magnetic Resonance Imaging, Memory, Temporal Lobe, Time Factors

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