Cited by 25Memory and Neural MechanismsSpatial Cognition and NavigationNeural dynamics and brain function

Topography in the bursting dynamics of entorhinal neurons

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Bant, Jason S., Hardcastle, Kiah, Ocko, Samuel A., Giocomo, Lisa M.·2020·Cell Reports

Abstract

Medial entorhinal cortex contains neural substrates for representing space. These substrates include grid cells that fire in repeating locations and increase in scale progressively along the dorsal-to-ventral entorhinal axis, with the physical distance between grid firing nodes increasing from tens of centimeters to several meters in rodents. Whether the temporal scale of grid cell spiking dynamics shows a similar dorsal-to-ventral organization remains unknown. Here, we report the presence of a dorsal-to-ventral gradient in the temporal spiking dynamics of grid cells in behaving mice. This gradient in bursting supports the emergence of a dorsal grid cell population with a high signal-to-noise ratio. In vitro recordings combined with a computational model point to a role for gradients in non-inactivating sodium conductances in supporting the bursting gradient in vivo. Taken together, these results reveal a complementary organization in the temporal and intrinsic properties of entorhinal cells.

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Crossref · 10.1016/j.celrep.2020.01.057

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  • Neurons in navigational brain regions change their firing patterns ('remap') in response to changing contextual factors such as environmental cues, task conditions, and behavioral states.

    “These cells also change their firing patterns (‘remap’) in response to changing contextual factors such as environmental cues, task conditions, and behavioral states, which influence neural activity throughout the brain.”

    From Remapping in a recurrent neural network model of navigation and context inference (2023) · cites this paper as Bant et al., 2020

    The Introduction (page not provided) says medial entorhinal neurons support navigation and that their firing rates vary with position, head direction, or running speed. That supports activity varying with navigational behavior, but the cited passages do not establish remapping in response to changing environmental cues, task conditions, or behavioral states. (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • Medial entorhinal cortex neurons change their firing rates and shift their spatial firing positions (remap) under a variety of circumstances, even when navigational cues remain stable.

    “At the same time, these neurons change their firing rates and shift their spatial firing positions—or ‘remap’—under a variety of circumstances, even when navigational cues remain stable (Bant et al., 2020; Boccara et al., 2019; Butler et al., 2019; Campbell et al., 2021; Campbell et al., 2018; Hardcastle et al., 2017b; Low et al., 2021).”

    From Remapping in a recurrent neural network model of navigation and context inference (2023) · cites this paper as Bant et al., 2020

    The Introduction (page not supplied) describes MEC firing rates as a function of position, while the Discussion addresses bursting dynamics and spatial tuning. Neither passage says that neurons change firing rates and shift their firing locations across circumstances while navigational cues remain stable. Searches for remapping, stable cues, and changes across conditions did not find that claim in our copy. (LLM, conf=0.72)

    Experimental — accuracy not yet measured

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Authors
Bant, J. S., Hardcastle, K., Ocko, S. A., & Giocomo, L. M.
Affiliations
  • Stanford Medicine (US)
  • Stanford University (US)
Corresponding author
Giocomo, Lisa M.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2020-02
Volume
30
Issue
7
Pages
2349-2359.e7
ISSN
2211-1247 (ISSN-L)
OpenAlex
W3007395460
Cited by
25
References
94
Citations by year
2024: 2 · 2023: 13 · 2022: 2 · 2021: 4 · 2020: 4
FWCI
1.45
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • SSRN Electronic Journal (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Science Foundation
  • Whitehall Foundation
  • Esther A. and Joseph Klingenstein Fund
  • Simons Foundation
  • National Institute of Mental Health
  • Office of Naval Research
  • New York Stem Cell Foundation
  • James S. McDonnell Foundation
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
medial entorhinal cortex, grid cells, bursting dynamics, signal-to-noise ratio, spatial representation, computational model
MeSH terms
Animals, Female, Male, Models, Neurological, Neurons, Entorhinal Cortex, Topography, Medical, Mice

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