During adulthood, there is a gradual decline in the proportion of
A) stage 1 sleep.
B) stage 2 sleep.
C) slow-wave sleep.
D) all stages of NREM sleep.

Question

Quizplus · Accepted Answer

Slow-wave sleep, also known as stage 3 and 4 NREM sleep, generally makes up less of the total sleep time in adults compared to in children and adolescents. Therefore, choice C is the correct answer. Choice A and B are incorrect because the proportion of stage 1 and stage 2 sleep does not significantly change during adulthood. Choice D is incorrect because it is too broad and not specific to any particular stage of NREM sleep.

During Adulthood, There Is a Gradual Decline in the Proportion