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What term do sleep researchers use to designate Stages 1–4 of sleep?

A) REM sleep
B) Non-REM sleep
C) REMN sleep
D) paradoxical sleep

Marked as best answer by Jacinda


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Answer: B
Rationale: REM is sometimes known as paradoxical sleep because the EEG waves appear to represent a state of wakefulness, but it is in fact a stage of sleep, during which body movements are inhibited. The REM pattern is so distinct that the first four stages are known collectively as non-REM or NREM sleep.

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