Definition of motor cortex in US English:

motor cortex


  • The part of the cerebral cortex in the brain where the nerve impulses originate that initiate voluntary muscular activity.

    • ‘This area is heavily interconnected with the motor cortex and had previously been associated with transforming data from the eyes and other senses into a spatial map of the surrounding environment.’
    • ‘The voluntary muscles are regulated by the parts of the brain known as the cerebral motor cortex and the cerebellum.’
    • ‘In the 1930s, the Canadian surgeon, Wilder Penfield, exploited the technique of electrical stimulation of the exposed cortex to map the location of the motor cortex.’
    • ‘The motor cortex is a brain region that controls voluntary muscle movement.’
    • ‘During REM sleep, the brain transfers short-term memories in the motor cortex to the temporal lobe to become long-term memories, Maas said.’