For instance, the ability to form words seems to lie primarily in the left hemisphere, while the right hemisphere seems to control many abstract reasoning skills.įor some as-yet-unknown reason, nearly all of the signals from the brain to the body and vice-versa cross over on their way to and from the brain. Although the two hemispheres seem to be mirror images of each other, they are different. Despite the split, the two cerebral hemispheres communicate with each other through a thick tract of nerve fibers that lies at the base of this fissure. The cerebrum is split into two halves (hemispheres) by a deep fissure. It allows you to recognize friends, read books, and play games. It holds your memories, allows you to plan, enables you to imagine and think. The cerebrum sits at the topmost part of the brain and is the source of intellectual activities. When people see pictures of the brain it is usually the cerebrum that they notice.
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