The two halves of the brain are connected by the corpus callosum. Severing the corpus callosum will completely cut off the communication between the two brains, thus creating two seperate brain halves. Although this sounds like a destructive procedure to do, researchers have actually found many benefits to this procedure. Patients with epilepsy are found to significantly improve after having their corpus callosum severed, as it decreases their seizure duration and intensity. However, there are some confusing complications that can result from this procedure. As the left brain contols the right side of the body and vice versa, the brain gets confused when there is no way to communicate between the two halves. During an experiement, a patient with the severed corpus callosum saw a picture of a square/circle; one half of the picture was a square, where the other half of the picture was a circle. When they are asked what they see looking at the picture one eye at a time, the patient will verbally say square, but then point with their left hand to the circle. Although the right side of the body sees the circle, it cannot gather the information from the left brain have to verbally say "circle". Therefore, the patient can only verbalize "square" and point to the circle. This is a result of the two brian halves not becaus able to communicate with eachother.
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