Which of the following is not a change that signals the beginning of REM sleep?
A) a decrease in EEG amplitude
B) an increase in the tension of the muscles of the body core
C) an increase in the oxygen consumption of the brain
D) an increase in the irregularity of the pulse
E) an increase in EEG frequency

Question

Quizplus · Accepted Answer

An increase in the tension of the muscles of the body core is not a change that signals the beginning of REM sleep. Rather, muscle tone is typically decreased during REM sleep, a state sometimes referred to as “paradoxical sleep” due to the simultaneous presence of rapid eye movements and muscle paralysis. The other options listed all describe changes that have been observed during the transition from non-REM to REM sleep.

Which of the Following Is Not a Change That Signals