The human brain is divided into regions that control various motor and sensory functions. Some of these regions are depicted here.

The damage from stroke to a specific region may affect the functions it controls, causing symptoms such as paralysis (loss of movement), difficulty speaking or loss of coordination.

The left side of the brain controls the motor and sensory functions of the right side of the body, and is responsible for scientific functions, understanding written and spoken language, number skills and reasoning.

The right side of the brain controls the motor and sensory functions of the left side of the body. It also controls artistic functions such as music, art awareness and insight.