Cited by 490Memory and Neural MechanismsNeural dynamics and brain functionMemory Processes and Influences

Integrating time from experience in the lateral entorhinal cortex

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Tsao, Albert, Sugar, Jørgen, Lu, Li, Wang, Cheng, Knierim, James J., Moser, May-Britt, Moser, Edvard I.·2018·Nature

Abstract

The encoding of time and its binding to events are crucial for episodic memory, but how these processes are carried out in hippocampal-entorhinal circuits is unclear. Here we show in freely foraging rats that temporal information is robustly encoded across time scales from seconds to hours within the overall population state of the lateral entorhinal cortex. Similarly pronounced encoding of time was not present in the medial entorhinal cortex or in hippocampal areas CA3-CA1. When animals' experiences were constrained by behavioural tasks to become similar across repeated trials, the encoding of temporal flow across trials was reduced, whereas the encoding of time relative to the start of trials was improved. The findings suggest that populations of lateral entorhinal cortex neurons represent time inherently through the encoding of experience. This representation of episodic time may be integrated with spatial inputs from the medial entorhinal cortex in the hippocampus, allowing the hippocampus to store a unified representation of what, where and when.

Integrity signals

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Crossref · 10.1038/s41586-018-0459-6

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Authors
Tsao, A., Sugar, J., Lu, L., Wang, C., Knierim, J. J., Moser, M.-B., & Moser, E. I.
Affiliations
  • Norwegian University of Science and Technology (NO)
  • Baylor College of Medicine (US)
  • Johns Hopkins University (US)
Corresponding author
  • Tsao, Albert
  • Moser, Edvard I.
Venue
Nature
Published
2018-08-29
Volume
561
Issue
7721
Pages
57-62
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2889422159
Cited by
490
References
51
Citations by year
2026: 35 · 2025: 69 · 2024: 74 · 2023: 51 · 2022: 78 · 2021: 66 · 2020: 56 · 2019: 51 · 2018: 10
FWCI
27.26
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
time encoding, lateral entorhinal cortex, medial entorhinal cortex, hippocampus, episodic memory, temporal binding, population coding, temporal flow, rats
MeSH terms
Animals, Behavior, Animal, Male, Time Factors, Entorhinal Cortex, Rats, Long-Evans, Rats

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