Sleep spindles,which appear against a background of mixed,mostly lower frequency EEG activity,are characteristic of
A) stage 1 sleep.
B) stage 2 sleep.
C) stage 4 sleep.
D) REM sleep.

Question

Quizplus · Accepted Answer

Sleep spindles are a characteristic of stage 2 sleep, which occurs after stage 1 sleep and is characterized by deeper sleep, more relaxed muscles, and slower heart rate and breathing. Sleep spindles are brief bursts of brain activity that typically last for about 1-2 seconds and appear on EEG recordings as a series of evenly spaced waves with a frequency of around 12-14 Hz. They are thought to play a role in memory consolidation and information processing during sleep.

Sleep Spindles,which Appear Against a Background of Mixed,mostly Lower Frequency