Cited by 111Memory and Neural MechanismsSpatial Cognition and NavigationNeural dynamics and brain function

Subcircuits of Deep and Superficial CA1 Place Cells Support Efficient Spatial Coding across Heterogeneous Environments

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Sharif, Farnaz, Tayebi, Behnam, Buzsáki, György, Royer, Sébastien, Fernandez-Ruiz, Antonio·2021·Neuron

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Abstract

The hippocampus is thought to guide navigation by forming a cognitive map of space. Different environments differ in geometry and the availability of cues that can be used for navigation. Although several spatial coding mechanisms are known to coexist in the hippocampus, how they are influenced by various environmental features is not well understood. To address this issue, we examined the spatial coding characteristics of hippocampal neurons in mice and rats navigating in different environments. We found that CA1 place cells located in the superficial sublayer were more active in cue-poor environments and preferentially used a firing rate code driven by intra-hippocampal inputs. In contrast, place cells located in the deep sublayer were more active in cue-rich environments and used a phase code driven by entorhinal inputs. Switching between these two spatial coding modes was supported by the interaction between excitatory gamma inputs and local inhibition.

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  • Spatial tuning across the hippocampus is not entirely independent but may form correlated assemblies.

    “This may support recent work in rodents suggesting that spatial tuning across the hippocampus is not entirely independent but may form correlated assemblies30,31,40,45.”

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Research works printed but not linked: 2

  1. Fernandez-Ruiz A, Muñoz S, Sancho M, Makarov VA, Herreras O. (2013a) Cytoarchitectonic and dynamic origins of giant positive LFPs in the Dentate Gyrus. J Neurosci 33: 15518– 15532. 24068819 PMC6618450
  2. Save E, Nerad L, and Poucet B (2000). Contribution of multiple sensory information to place field stability in hippocampal place cells. Hippocampus 10, 64– 76. 10706218

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Authors
Sharif, F., Tayebi, B., Buzsáki, G., Royer, S., & Fernandez-Ruiz, A.
Affiliations
  • Boston Children's Hospital (US)
  • NYU Langone Health (US)
  • Korea Institute of Science and Technology (KR)
Corresponding author
Royer, Sébastien
Venue
Neuron
Publisher
Elsevier BV
Published
2021-01
Volume
109
Issue
2
Pages
363-376.e6
ISSN
0896-6273 (ISSN-L)
OpenAlex
W3105442427
Cited by
111
References
96
Citations by year
2026: 19 · 2025: 28 · 2024: 17 · 2023: 16 · 2022: 20 · 2021: 10 · 2020: 1
FWCI
6.32
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Brain and Behavior Research Foundation
  • National Institutes of Health
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
spatial coding, hippocampus, phase codes, gamma oscillations, local inhibition, cognitive maps, navigation
MeSH terms
Place Cells, Animals, Electrodes, Implanted, Environment Design, Male, Mice, Inbred C57BL, Nerve Net, Space Perception, Maze Learning, Rats, Long-Evans, Mice, Rats, CA1 Region, Hippocampal

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