Cited by 91Memory and Neural MechanismsNeurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology Research

Temporally selective contextual encoding in the dentate gyrus of the hippocampus

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Rangel, L.M., Alexander, A.S., Aimone, J.B., Wiles, J., Gage, F.H., Chiba, A.A., Quinn, L.K.·2014·Nature Communications

Abstract

A recent model of the hippocampus predicts that the unique properties of the dentate gyrus allow for temporal separation of events. This temporal separation is accomplished in part through the continual generation of new neurons, which, due to a transient window of hyperexcitability, could allow for preferential encoding of information present during their development. Here we obtain in vivo electrophysiological recordings and identify a cell population exhibiting activity that is selective to single contexts when rats experience a long temporal separation between context exposures during training. This selectivity is attenuated as the temporal separation between context exposures is shortened and is further attenuated when neurogenesis is reduced. Our data reveal the existence of a temporal orthogonalizing neuronal code within the dentate gyrus, a hallmark feature of episodic memory.

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Authors
Rangel, L. M., Alexander, A. S., Aimone, J. B., Wiles, J., Gage, F. H., Chiba, A. A., & Quinn, L. K.
Affiliations
  • University of California San Diego (US)
  • Salk Institute for Biological Studies (US)
  • The University of Queensland (AU)
Corresponding author
Quinn, L.K.
Venue
Nature Communications
Published
2014-02-12
Volume
5
Issue
1
Pages
3181-3181
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2012225083
Cited by
91
References
32
Citations by year
2026: 1 · 2025: 3 · 2024: 7 · 2023: 6 · 2022: 8 · 2021: 8 · 2020: 9 · 2019: 7 · 2018: 6 · 2017: 12 · 2016: 9 · 2015: 9 · 2014: 6
FWCI
6.70
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Science Foundation (0542013)
  • James S. McDonnell Foundation
  • National Institutes of Health
  • Directorate for Biological Sciences
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
dentate gyrus, hippocampus, contextual encoding, neurogenesis, adult neurogenesis, hyperexcitability, episodic memory, rats
MeSH terms
Animals, Male, Dentate Gyrus, Rats, Long-Evans, Rats, Neurogenesis

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