Suppose a patient with a severed corpus callosum has a picture of an apple presented briefly to the left of the visual fixation point. What will the patient report seeing?

Question

Quizplus · Accepted Answer

The corpus callosum connects the two hemispheres of the brain, allowing them to communicate. When it is severed, information cannot pass from one hemisphere to the other. Visual information from the left visual field (which is processed by the right hemisphere) cannot be transmitted to the left hemisphere, which controls speech. Therefore, the patient would not be able to verbally report seeing the apple, leading to the response of "nothing."

Suppose a Patient with a Severed Corpus Callosum Has a Picture