A patient such as D.B., who is able to point accurately to locations that he does not report seeing, is demonstrating _____.
A) visual agnosia
B) cortical blindness
C) scintillating scotoma
D) nystagmus

Question

Quizplus · Accepted Answer

D.B.'s ability to point to locations he does not report seeing suggests that he is experiencing cortical blindness, also known as blindsight. This is a condition in which there is damage to the primary visual cortex, resulting in the inability to consciously perceive visual information, but some processing of visual information still occurs unconsciously, allowing for accurate pointing to visual stimuli. Visual agnosia is a condition in which there is difficulty recognizing or identifying visual stimuli, scintillating scotoma refers to a visual aura that can occur with migraines, and nystagmus is an involuntary eye movement.

A Patient Such as D