The word hemisphere refers to one side of the brain, either the left or right side.People refers to the left hemisphere of the brain as the boring side since it controls things like your speech. It also controls the right side of the body and its sensations and the right side of the vision. The right hemisphere controls music and art appreciation as well as drawing ability. It also controls the left part of the body and its sensations as well of the left side of the vision. The corpus callosum is a bundle of nerve fibers found in the brain. These nerve fibers connect the left and right hemispheres. It is composed of white matter. Paul Broca studied the brain of a person with speech impairment after his death. He learned that this patient had a lesion on his left hemisphere due to syphilis. Broca’s Area controls speech production, language processing, language comprehension, and facial neurons. Roger Sperry studied both of the hemispheres of the brain in this experiment with some epileptic people. The study made us know for sure that both hemispheres had different tasks. We realized what we know now and that the right side cannot be disconnected from the left side. Karl Wernicke’s work is very similar to Paul Broca’s. Although Wernicke found out those problems with language comprehension came from another part of the left hemisphere. This part of the brain is now called Wernicke’s area. The lobe responsible for vision is the occipital lobe. For hearing and language the temporal lobe is the one responsible. For math calculations and judgment, reasoning and impulse you use the frontal lobe.
http://www.wisegeek.com/what-is-the-corpus-callosum.htm
http://www.wisegeek.com/what-is-the-corpus-callosum.htm
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