Why is REM sleep called paradoxical sleep?
A) The person is not really asleep.
B) The person's body is asleep, but the person's brain is active.
C) The person has no awareness of being asleep.
D) None of the above is correct.

Question

Quizplus · Accepted Answer

REM sleep is called paradoxical sleep because the person's body is in a state of deep relaxation and appears to be asleep, but the person's brain is highly active and may even be more active than during wakefulness. This contrast between the two states (relaxed body and active brain) is what makes it paradoxical.

Why Is REM Sleep Called Paradoxical Sleep