Sleep Flashcards by Alice Gladwell | Brainscape

Q

What are the four stages of NREM? and what

A

NREM = non rapid eye movement.

Drifting
Relaxation + light sleep
Restorative
Restorative

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Q

How long is each stage of REM?

A

90 mins

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Q

How many stages of REM per night?

A

4

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