The cerebrum is the largest part of the human brain, making up about two-thirds of the brain's mass. It has two hemispheres, each of which has four lobes: frontal, parietal, temporal and occipital. The cerebrum and the diencephalon make up the forebrain.
The cerebrum, which is also called the telencephalon, is situated at the top of the brain, with the pons, cerebellum and medulla oblongata located underneath it. Gray tissue called the cerebral cortex covers the cerebrum. The forebrain is responsible for thinking and perception, the reception and processing of sensory data, motor function, and the making and comprehension of language.