Abstract：
:Mammalian motor cortex consists of several interconnected subregions thought to play distinct roles in voluntary movements, yet their specific role in decision making and execution is not completely elucidated. Here we used transient optogenetic inactivation of the caudal forelimb area (CFA) and rostral forelimb area (RFA) in mice as they performed a directional joystick task. Based on a vibrotactile cue applied to their forepaw, mice were trained to push or pull a joystick after a delay period. We found that choice and execution are temporally segregated processes. CFA and RFA were both essential during the stimulus delivery for correct choice and during the answer period for motor execution. Fine, distal motor deficits were restricted to CFA inactivation. Surprisingly, during the delay period neither area alone, but only combined inactivation was able to affect choice. Our findings suggest transient and partially distributed neural processing of choice and execution across different subregions of the motor cortex.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Morandell K,Huber Ddoi
10.1038/s41598-017-15835-2subject
Has Abstractpub_date
2017-11-17 00:00:00pages
15759issue
1issn
2045-2322pii
10.1038/s41598-017-15835-2journal_volume
7pub_type
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