Guisheng: Nature, Auditory corollary discharge
background
- different cortical regions interact strongly (e.g. motor cortex talks to other cortexes)
- this is called “corollary discharge”.
Observations
- auditory cortical excitatory connections are suppressed during movement.
- apparent anticiaption of movement? — supression starts before and extends just past movement phase by ~1s on either side.
- excitability by external stimuli is reduced during movement
- inhibitory activity increases during movement (local effects)
- stimulating axons from motor cortex that innervate auditory cortex results in repression of auditory cortex.
- locomotion in absence of motor-cortex activity does not suppress auditory function.