STATES OF CONSCIOUSNESS
PSYCHOLOGY OF SLEEP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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stage 1
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stage 2
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stage 3
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REM
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Detailed explanation-1: -Along with another wave pattern called K-complexes, sleep spindles are considered a hallmark of stage 2 NREM sleep.
Detailed explanation-2: -Human sleep spindles recorded through EEG mark several characteristic moments as sleep evolves during a night. They appear at the onset of NREMS stage N2 (10, 186), when consciousness fades.
Detailed explanation-3: -The second stage of NREM sleep on EEG shows theta waves, which, along with K-complexes and sleep spindles, are the defining characteristics of this stage.
Detailed explanation-4: -Sleep spindles and K-complexes emerge in stage 2 sleep. Stage 3 and stage 4 are described as slow-wave sleep that is marked by a predominance of delta waves. REM sleep involves rapid movements of the eyes, paralysis of voluntary muscles, and dreaming.