Author Question: A single cycle of non-REM and REM sleep lasts about a. 10 minutes. b. 30-40 minutes. c. 90 ... (Read 120 times)

Diane · **on:** Jun 22, 2018

A single cycle of non-REM and REM sleep lasts about

a. 10 minutes.
b. 30-40 minutes.
c. 90 minutes.
d. 360 minutes.
e. 8 hours.

Question 2

Which of the following is true of human sleep cycles?

a. Sleep cycles are random across the night.
b. Subjects first enter REM sleep and then transition to non-REM sleep.
c. As the night goes on, the relative length of REM sleep increases in each successive cycle.
d. Stage 3 of slow-wave sleep mostly occurs in the early morning hours.
e. Each non-REM/REM cycle lasts about 45 minutes.

milbourne11 · **Reply #1 on:** Jun 22, 2018

Answer to Question 1

Answer: c. 90 minutes.

Answer to Question 2

Answer: c. As the night goes on, the relative length of REM sleep increases in each successive cycle.