Nonprimary motor cortex - definition
region of the frontal cortex involved in movement but distinct from the primary motor cortex. The nonprimary motor cortex contains several areas, such as the premotor and supplementary motor areas, involved with various aspects of movement like planning, initiating, and selecting the proper movement given a particular context.
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2-Minute Neuroscience: Motor Cortex
Nonprimary motor cortex (in purple).