A synaptic and circuit basis for corollary discharge in the auditory cortex.

Published

Journal Article

Sensory regions of the brain integrate environmental cues with copies of motor-related signals important for imminent and ongoing movements. In mammals, signals propagating from the motor cortex to the auditory cortex are thought to have a critical role in normal hearing and behaviour, yet the synaptic and circuit mechanisms by which these motor-related signals influence auditory cortical activity remain poorly understood. Using in vivo intracellular recordings in behaving mice, we find that excitatory neurons in the auditory cortex are suppressed before and during movement, owing in part to increased activity of local parvalbumin-positive interneurons. Electrophysiology and optogenetic gain- and loss-of-function experiments reveal that motor-related changes in auditory cortical dynamics are driven by a subset of neurons in the secondary motor cortex that innervate the auditory cortex and are active during movement. These findings provide a synaptic and circuit basis for the motor-related corollary discharge hypothesized to facilitate hearing and auditory-guided behaviours.

Full Text

Duke Authors

Cited Authors

  • Schneider, DM; Nelson, A; Mooney, R

Published Date

  • September 11, 2014

Published In

Volume / Issue

  • 513 / 7517

Start / End Page

  • 189 - 194

PubMed ID

  • 25162524

Pubmed Central ID

  • 25162524

Electronic International Standard Serial Number (EISSN)

  • 1476-4687

Digital Object Identifier (DOI)

  • 10.1038/nature13724

Language

  • eng

Conference Location

  • England