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Engram cell connectivity as a mechanism for information encoding and memory function

bioRxiv, ISSN: 2692-8205
2023
  • 1
    Citations
  • 0
    Usage
  • 0
    Captures
  • 1
    Mentions
  • 1
    Social Media
Metric Options:   Counts1 Year3 Year

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  • Citations
    1
    • Citation Indexes
      1
      • CrossRef
        1
  • Mentions
    1
    • News Mentions
      1
      • 1
  • Social Media
    1
    • Shares, Likes & Comments
      1
      • Facebook
        1

Most Recent News

Engram cell connectivity as a mechanism for information storage and memory function

2023 OCT 09 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Life Science Daily -- According to news reporting based on a preprint

Article Description

Information derived from experiences is incorporated into the brain as changes to ensembles of cells, termed engram cells, that allow memory storage and recall. The mechanism by which those changes hold specific information is unclear. Here we test the hypothesis that the specific synaptic wiring between engram cells is the substrate of information storage. First, we monitor how learning modifies the connectivity pattern between engram cells at a monosynaptic connection involving the hippocampal vCA1 region and the amygdala. Then, we assess the functional significance of these connectivity changes by artificially activating or inhibiting its presynaptic and postsynaptic components respectively. Finally, we identify a synaptic plasticity mechanism mediated by PSD-95, which impacts the connectivity pattern among engram cells and contributes to the long-term stability of the memory. These findings impact our theory of learning and memory by helping us explain the translation of specific information into engram cells and how these connections shape brain function.

Bibliographic Details

Luis, Clara Ortega-de San; Pezzoli, Maurizio; Urrieta, Esteban; Ryan, Tomás J

Cold Spring Harbor Laboratory

Biochemistry, Genetics and Molecular Biology; Agricultural and Biological Sciences; Immunology and Microbiology; Neuroscience; Pharmacology, Toxicology and Pharmaceutics

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