A Doctor Activates the Surface of a Patient's Brain by Touching

question 108

Multiple Choice

A doctor activates the surface of a patient's brain by touching it with a small electrified wire and the patient tells the doctor what effect the stimulation had. Regarding this procedure, which of the following statements is TRUE?

• A)This procedure is impossible because patients cannot be awake during brain procedures.
• B)The doctor is performing an ablation.
• C)The doctor is using an electrode to "turn on" brain structures.
• D)The doctor is using an EEG to "turn on" brain structures.

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Definitions:

Opponent Process Theory

A psychological and neurological model that explains how humans perceive colors as the result of opposing processes between two sets of colors: red-green, blue-yellow, and black-white.

Ganglion Cells

Neurons located in the retina that receive visual information from photoreceptors and transmit it to the brain via the optic nerve.

Interposition

A visual cue in which one object partially blocks another, helping to perceive depth and the relative position of objects.

Binocular Cues

Visual information taken in by two eyes that enable a person to gain a sense of depth and distance.