which body region is controlled by the largest area of the motor cortex
Primary motor cortex (Brodmann area 4) of the left cerebral hemisphere shown in red. The primary motor cortex (Brodmann area 4) is a brain region that in humans is located in the dorsal portion of the frontal lobe.owever, some body parts may be controlled by partially overlapping regions of cortex. Each cerebral hemisphere of the primary motor cortex only contains a motor representation of the opposite (contralateral) side of the body.