The cerebellum coordinates balance, posture, and the precision of voluntary movement in humans.
Located at the back of the brain beneath the occipital lobes, the cerebellum receives information from the inner ear, eyes, spinal cord, and motor areas of the cerebral cortex. It compares intended movements with sensory feedback and helps adjust the timing, force, and accuracy of muscle activity.
The cerebellum does not normally initiate voluntary movement by itself. Instead, it fine-tunes movements and contributes to motor learning, such as improving coordination through practice. Damage can cause ataxia, characterized by unsteady movement, poor balance, and difficulty with precise actions. The cerebrum handles many conscious planning and perception functions, while the brainstem contains major pathways and centers for vital functions.