During REM sleep, neuronal activity decreases in the:
A) entire brain.
B) pons.
C) limbic system.
D) primary visual cortex and the motor cortex.

Question

Quizplus · Accepted Answer

During REM sleep, neuronal activity decreases in the primary visual cortex and the motor cortex, which can help explain why our dreams often involve vivid visual and emotional experiences, but we are generally paralyzed and do not physically act out our dreams. Activity in other parts of the brain, such as the limbic system, remains high during REM sleep. The pons, located in the brainstem, is actually more active during REM sleep than during wakefulness or other sleep stages, as it is involved in regulating many of the physiological changes that occur during this stage, such as rapid eye movements and changes in heart rate and breathing.

During REM Sleep, Neuronal Activity Decreases in The