A patient who had a stroke in her right parietal lobe has extinction as a result of her injury.This person will fail to report a
A)single visual stimulus presented to the contralesional visual field.
B)single visual stimulus presented to the ipsilesional visual field.
C)visual stimulus presented to her contralesional visual field if another stimulus is simultaneously presented to her ipsilesional visual field.
D)visual stimulus presented to her ipsilesional visual field if another stimulus is simultaneously presented to her contralesional visual field.

Question

Quizplus · Accepted Answer

Extinction is a phenomenon in which a patient fails to report a stimulus presented to their contralesional (opposite side to the brain injury) visual field when another stimulus is presented simultaneously to their ipsilesional (same side to the brain injury) visual field. Therefore, the patient will fail to report a visual stimulus presented to her contralesional visual field if another stimulus is simultaneously presented to her ipsilesional visual field. Option A is incorrect because extinction occurs when two stimuli are presented and not when just one is presented. Option B is incorrect because extinction occurs only in the contralesional visual field. Option D is incorrect because the patient with extinction fails to report the stimulus presented in the contralesional visual field.

A Patient Who Had a Stroke in Her Right Parietal