A split-brain patient is shown the word lockbox,with lock in the left visual field and box in the right visual field.The patient is then asked to draw a picture of the word that she just saw using only her left hand.She will draw a picture of a:
A)box with a lock on it.
B)box.
C)lock.
D)key.

Question

Quizplus · Accepted Answer

In split-brain patients, the corpus callosum, which connects the two hemispheres of the brain, is severed. This means that information presented to one hemisphere is not shared with the other. The left visual field projects to the right hemisphere, and the right visual field projects to the left hemisphere. The right hemisphere controls the left hand. Since "lock" was presented to the left visual field, it was processed by the right hemisphere. Therefore, when asked to draw with her left hand (controlled by the right hemisphere), the patient would draw a "lock," corresponding to the information processed by the right hemisphere.

A Split-Brain Patient Is Shown the Word Lockbox,with Lock in the Left