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    Early peripheral activity alters nascent subplate circuits in the auditory cortex

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    Author
    Meng, X.
    Mukherjee, D.
    Kao, J.P.Y.
    Kanold, P.O.
    Date
    2021-02-12
    Journal
    Science Advances
    Publisher
    American Association for the Advancement of Science
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.1126/sciadv.abc9155
    Abstract
    Cortical function can be shaped by sensory experience during a critical period. The onset of the critical period is thought to coincide with the onset of thalamocortical transmission to the thalamo-recipient layer 4 (L4). In early development, subplate neurons (SPNs), and not L4 neurons, are the first targets of thalamic afferents. SPNs are transiently involved in early development and are largely eliminated during development. Activation of L4 by thalamic afferents coincides with the opening of ear canal (~P11 in mice) and precedes the later critical period. Here, we show in mice that abolishing peripheral function or presenting sound stimuli even before P11 leads to bidirectionally altered functional connectivity of SPNs in auditory cortex. Thus, early sensory experience can sculpt subplate circuits before thalamocortical circuits to L4 are mature. Our results show that peripheral activity shapes cortical circuits in a sequential manner and from earlier ages than has been appreciated. Copyright Copyright 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
    Sponsors
    This study was supported by NIH R01DC009607 (P.O.K.) and NIH R01GM056481 (J.P.Y.K.).
    Keyword
    cortical circuits
    sensory stimuli
    subplate neurons
    Auditory Cortex--growth & development
    Mice
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/15224
    ae974a485f413a2113503eed53cd6c53
    10.1126/sciadv.abc9155
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