Humans show which pattern of blood flow and mental activity during REM sleep?
A) Cortical blood flow is reduced during REM sleep as blood is shunted to the genitals.
B) Cerebral blood flow is low in the primary visual cortex.
C) Cerebral blood flow is very low during color dreaming.
D) Cerebral blood flow is high in the visual association cortex and low in the frontal cortex.
E) Cerebral blood flow is low in the primary auditory cortex.

Question

Quizplus · Accepted Answer

During REM sleep, cerebral blood flow is high in the visual association cortex, which is responsible for visual processing, and low in the frontal cortex, which is responsible for logical reasoning and decision-making. This pattern of blood flow is consistent with the vivid and often illogical visual dreams experienced during REM sleep.

Humans Show Which Pattern of Blood Flow and Mental Activity