parietal lobe, a portion of each cerebral hemisphere that occupies the parts of the lateral and medial surfaces that are covered by the parietal bone. On the lateral surface of the hemisphere the parietal lobe is separated from the frontal lobe by the central sulcus and from the temporal lobe by an imaginary line that extends from the posterior ramus of the lateral sulcus toward the occipital pole. It is concerned with language mechanisms and general sensory functions. Compare central lobe, frontal lobe, occipital lobe, temporal lobe.
