Stage 2 of sleep is indicated by sleep spindles and:

Name: Stage 2 of sleep is indicated by sleep spindles and:
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Stage 2 of sleep is indicated by sleep spindles and K complexes. K complexes are high amplitude, low frequency waves seen in the electroencephalogram (EEG) during stage 2 sleep. They are thought to represent a reaction of the brain to external stimuli and help to maintain the state of sleep. Alpha bundles, slow wave bundles, and theta spikes are not typically seen during stage 2 sleep.

Stage 2 of Sleep Is Indicated by Sleep Spindles And