Use the following to answer questions :
Refer to the figure below.

-Which stages are often grouped together in one category?
A) Waking, stage 1, and REM
B) Waking, stage 2, and stage 3 SWS
C) Stage 1, stage 2, and stage 3 SWS
D) Stage 2, stage 3 SWS, and REM

Question

Use the following to answer questions :
Refer to the figure below.
 
-Which stages are often grouped together in one category?
A) Waking, stage 1, and REM 
B) Waking, stage 2, and stage 3 SWS 
C) Stage 1, stage 2, and stage 3 SWS 
D) Stage 2, stage 3 SWS, and REM

Quizplus · Accepted Answer

Stage 1, stage 2, and stage 3 SWS (slow-wave sleep) are often grouped together as non-REM (NREM) sleep stages.

Use the Following to Answer Questions