Each cerebral cortex has four geographic ares. The frontal lobe, just behind the forehead, is involved in speaking, muscle movements, and planning and judgement. The parietal lobes, at the top of the head and towards the rear, receive sensory input for touch and body position. The occipital lobes, at the back of the head, include visual areas. The temporal lobes, just above the ears, include auditory areas. Each lobe performs many functions and interacts with other areas of the cortex.