What term do sleep researchers use to designate stages 1-3 of sleep?
A) REM sleep
B) non-REM sleep
C) REMN sleep
D) paradoxical sleep

Question

What term do sleep researchers use to designate stages 1-3 of sleep?
A) REM sleep 
B) non-REM sleep 
C) REMN sleep
D) paradoxical sleep

Quizplus · Accepted Answer

Sleep researchers use the term non-REM (NREM) sleep to designate stages 1-3 of sleep. REM sleep (choice A) is a separate stage of sleep characterized by rapid eye movements and vivid dreams, occurring predominantly in stage 5 sleep. REMN sleep (choice C) is not a recognized term in sleep research. Paradoxical sleep (choice D) is another name for REM sleep.

What Term Do Sleep Researchers Use to Designate Stages 1-3