Brodmann area 4

Brodmann area 4 refers to the region of the brain's precentral gyrus, commonly known as the primary motor cortex. Located in the frontal lobe, it is responsible for controlling voluntary muscle movements on the opposite side of the body. When you decide to move your arm or leg, this area sends signals through the nervous system to activate those muscles. It plays a crucial role in planning, initiating, and executing precise movements, making it essential for activities that require fine motor skills and coordination.