premise: The human brain is controlled by the cerebral cortex.
hypothesis: The cerebral cortex is the outer layer of neural tissue of the cerebrum of the brain , in humans and other mammals . The cerebral cortex is composed of gray matter , consisting mainly of cell bodies ( with astrocytes being the most abundant cell type in the cortex as well as the human brain in general ) and capillaries . Human brain . The human brain , with the spinal cord , makes up the central nervous system . The brain is the organ that controls most of the activities of the body . It is divided into two cerebral hemispheres which are covered by the cerebral cortex .