Sleep stage 3 is distinguished from sleep stage 4 by the:
A) Presence of bursts of theta waves
B) Presence of sleep spindles and k-complexes
C) Percentage of large delta waves present on the electroencephalogram
D) Percentage of relatively low-voltage, mixed-frequency waves

Question

Quizplus · Accepted Answer

The distinction between stage 3 and stage 4 is usually found in the presence of large delta waves,or slow waves.At the beginning of stage 3,delta waves constitute 20% to 50% of the electroencephalogram.Stage 4 is identified by the presence of the delta waves for at least 50% of the electroencephalogram recording.

Sleep Stage 3 Is Distinguished from Sleep Stage 4 by The