After Split-Brain Surgery, Jerad Is Able to Verbally Identify an Image

question 119

Multiple Choice

After split-brain surgery, Jerad is able to verbally identify an image flashed to his right visual field, but is unable to name the object when presented to the left visual field. Why is Jerad able to name the objects under one condition, but not the other?

• A) His left hemisphere has been removed in the surgery. The left hemisphere controls the right side of the body and so he is unable to move his mouth to name objects.
• B) His right hemisphere has been removed in the surgery. The right hemisphere controls the right side of the head and so he is unable to move his mouth to name objects.
• C) The corpus callosum has been severed. The right hemisphere language areas are unable to process the visual information from the right eye, but are able to process visual information from the left eye.
• D) The corpus callosum has been severed. The left hemisphere language areas are unable to process the visual information from the left visual field, but are able to process visual information from the right visual field.

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Definitions:

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate, blood pressure, and glucose metabolism.

Polygraph

An instrument that measures multiple physiological responses, such as blood pressure, pulse, and respiration, used to infer truths or falsehoods in a person's statements.

Blood Sugar Level

The concentration of glucose present in the blood, which is a critical indicator of metabolic health and is regulated by hormonal controls.

Hormone Secretions

The process by which endocrine glands produce and release hormones into the bloodstream to regulate the body's functions.