Hemisphere of the brain function, can be summarized into the following understanding: the brain at about the two hemispheres, each hemisphere has separately exercise area, somatosensory area, visual area, auditory areas, such as the nerve center of the joint area. This shows that the two cerebral hemispheres are symmetrical. At the operation of nerve conduction, the nerve center of the two hemispheres relative, with one another, the occurrence of cross-role: the two hemispheres of the body parts of the exercise zone management, are about cross, inverted from top to bottom; two hemispheres of the visual areas and the relationship between the two are: management of left hemisphere visual area 2 of the left retina, and the right hemisphere visual management of the right retina 2; two hemispheres of the auditory。 In the whole brain function, the two hemispheres are not separate, still has the interaction between the two; and interactive play, is on the corpus callosum connections to complete. Under normal circumstances, the two hemispheres of the brain function is a division of labor, and in between the two hemispheres, consisting of nerve fibers from the corpus callosum is responsible for communication between the two hemispheres of the information. If you cut the corpus callosum, cerebral hemispheres were separated, the hemispheres function in isolation, lack of appropriate co-operation will be lost in the act of cooperation with EC. Human brain hemispheres, in the functional division of, by and large are left hemisphere right half pipe, right hemisphere。 Human brain hemispheres, in the functional division of, by and large are left hemisphere tube right half, left side right hemisphere control. Longitudinal each hemisphere, at the functional level has also divided, in principle, lower limbs are the upper tube, middle governing body, the lower head tube. So the formation of the inverted top to bottom, around the delicate branching structure. In each hemisphere, each district has a number of the nerve center of each hub has its own fixed, regional, subregional specialized brain differentiation and the formation of the complex functional integration. At the regional distribution, the two hemispheres are not identical: one of Brandt's language areas and language areas weissflogii only distributed in the left brain hemisphere, while other districts have two hemispheres. Cerebellum (cerebellum) are the largest part of brain, central nervous system is the brain behind the second largest organ. Slightly oval, located in the dorsal pons and medulla oblongata, has one cavity between the fourth ventricle. Cerebellar central stenosis, known as the cerebellar vermis; both sides of the expansion, called the cerebellar hemisphere. Cerebellar surface was covered by a layer of gray matter, known as the cerebellar cortex (or cerebellar cortex). Brainstem function is mainly to maintain the individual lives, including heart rate, respiration, digestion, body temperature, sleep and other important physiological functions, are related to brainstem function. Spread to the brain via the spinal cord of nerve impulses, was cross-entered: the right side of the impulse from the spinal cord, first spread to the left side of the brain stem, and then into the brain; from the left side of the spinal cord, the first into the right side of the brain stem, longer to the brain.