Following surgery to alleviate her epilepsy,Aino can read words presented to the right visual field,but CANNOT name objects presented to the left visual field.What type of surgery did Aino undergo,and what did it involve?
A) Hemispherectomy, which severs the caudate nucleus
B) Split-brain, which severs the corpus callosum
C) Hemispherectomy, which severs the corpus callosum
D) Split-brain, which severs the caudate nucleus

Question

Quizplus · Accepted Answer

Aino underwent a split-brain surgery, which severs the corpus callosum. This surgery is done to alleviate epilepsy by preventing the spread of seizure activity from one hemisphere to the other. The result is that information presented to one side of the visual field is processed primarily by the opposite hemisphere, and since the corpus callosum is severed, the two hemispheres cannot communicate. As a result, Aino can read words presented to the right visual field (which is processed primarily by the left hemisphere) but cannot name objects presented to the left visual field (which is processed primarily by the right hemisphere).

Following Surgery to Alleviate Her Epilepsy,Aino Can Read Words Presented