Patient D.B.was able to locate spots of light presented in his blind field even though he could not see them because:
A) his geniculostriate pathway was intact.
B) his retinohypothalamic pathway was still intact.
C) his tectopulvinar pathway was still intact.
D) his dorsal stream was damaged.

Question

Quizplus · Accepted Answer

The ability to detect spots of light presented in the blind field indicates that the tectopulvinar pathway, which is responsible for processing visual information without conscious awareness, is still intact. The geniculostriate pathway, which is involved in conscious visual perception, is likely damaged if the patient has a blind field. The retinohypothalamic pathway is responsible for regulating circadian rhythms and is not likely to be involved in the patient's ability to locate spots of light. The dorsal stream is responsible for processing visual motion and spatial relationships and is not likely to be involved in spot detection.

Patient DB