Cited by 290Memory and Neural MechanismsSpatial Cognition and NavigationNeurogenesis and neuroplasticity mechanisms

Traces of experience in the lateral entorhinal cortex

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Tsao, Albert, Moser, May-Britt, Moser, Edvard I.·2013·Current Biology

Abstract

A growing body of evidence suggests that memories are stored in the hippocampus by integrating spatial information from specialized cell types in the medial entorhinal cortex (MEC) with nonspatial information from cells in the lateral entorhinal cortex (LEC). LEC neurons show little spatial modulation when rats run in empty open-field environments but fire in the vicinity of discrete objects, suggesting that they provide information about the specific content of the spatial environment. It is unclear, however, whether firing at objects is elicited purely by stimulus properties, in a sensory-like manner, or whether any higher-order property, such as the history of experience, is also relevant. To address this question, we recorded from LEC neurons in an open field where objects were present on a subset of the trials. Whereas some neurons fired at the objects, other cells developed specific firing at places where objects had been located on previous trials, providing a readout of past experience in the environment. The latter cells generally did not respond to the object when it was present, suggesting that object cells and object-trace cells are independent cell classes. These findings identify LEC as a component of the hippocampal-cortical circuit for object-place memory.

Integrity signals

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Crossref · 10.1016/j.cub.2013.01.036

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Authors
Tsao, A., Moser, M.-B., & Moser, E. I.
Affiliations
Norwegian University of Science and Technology (NO)
Corresponding author
  • Tsao, Albert
  • Moser, Edvard I.
Venue
Current Biology
Publisher
Elsevier BV
Published
2013-03
Volume
23
Issue
5
Pages
399-405
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2166846124
Cited by
290
References
46
Citations by year
2026: 13 · 2025: 18 · 2024: 35 · 2023: 24 · 2022: 23 · 2021: 25 · 2020: 23 · 2019: 22 · 2018: 24 · 2017: 29 · 2016: 11 · 2015: 17 · 2014: 15 · 2013: 10 · 2012: 1
FWCI
9.65
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
lateral entorhinal cortex, spatial memory, memory traces, hippocampus
MeSH terms
Animals, Male, Memory, Entorhinal Cortex, Rats, Long-Evans, Rats

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