THE PSYCHOLOGY OF EMOTIONS
STATES OF CONSCIOUSNESS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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NREM-1
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NREM-2
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NREM-3
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REM
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Detailed explanation-1: -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-2: -Along with another wave pattern called K-complexes, sleep spindles are considered a hallmark of stage 2 NREM sleep.
Detailed explanation-3: -Sleep spindles are short (<2 s), synchronous bursts of activity between 11 and 17 Hz. They are found throughout NREM sleep but are particularly numerous in NREM stage 2 (NREM2) sleep.
Detailed explanation-4: -Sleep spindles are found during the early stages of sleep (sleep stage 2 in humans) and constitute an electrographic landmark for the transition from waking to sleep. Spindle oscillations consist of 7–14 Hz waxing and waning potentials, grouped in sequences lasting 1–3 s and recurring every 3–10 s.
Detailed explanation-5: -Spindles occur during both light NREM sleep and deep slow-wave sleep, but not during REM sleep.