What can happen if the brain’s two hemispheres have trouble communicating?



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    The brain’s hemispheres communicate through the corpus callosum. The corpus callosum is sometimes severed intentionally, as a treatment for epilepsy. It can also become severed or damaged in other ways.

    Severing the corpus callsom can reduce the frequency or severity of seizures, as a seizure that begins in one hemisphere will not carry over to the other. In addition, a patient with a split brain will be unable to verbally name or describe anything he or she sees only in his or her left visual field (not left eye, left half of each eye’s field of vision) despite being able to nonverbally identify what he or she has seen. This is merely one eample of the impact of having one’s brain split.

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