Although it is normal, Mr. Rebuck's EEG pattern five or six hours into his sleep study shows that his
A) NREM sleep decreases and REM sleep increases.
B) REM sleep decreases and NREM sleep increases.
C) REM and NREM sleep both decrease.
D) REM and NREM sleep both increase.

Question

Quizplus · Accepted Answer

During a typical night's sleep, the amount of NREM sleep decreases and the amount of REM sleep increases as the night progresses. This is because sleep cycles, lasting about 90 minutes each, include both NREM and REM phases, with REM phases becoming longer towards the morning.

Although It Is Normal, Mr