parietal lobe
one of the four main subdivisions of each cerebral hemisphere. It occupies the upper central area of each hemisphere, behind the frontal lobe, ahead of the occipital lobe, and above the temporal lobe. Parts of the parietal lobe participate in somatosensory activities, such as the discrimination of size, shape, and texture of objects; visual activities, such as visually guided actions; and auditory activities, such as speech perception.