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 4
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Stage 3
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Stage 2
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Stage 1
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Detailed explanation-1: -Yes, REM is the deepest phase of sleep. Each sleep stage gets progressively deeper, with NREM stage 3 and REM the deep-sleep phases.
Detailed explanation-2: -In the deepest level of sleep, stage IV sleep, the predominant EEG activity consists of low frequency (1–4 Hz), high-amplitude fluctuations called delta waves, the characteristic slow waves for which this phase of sleep is named. The entire sequence from drowsiness to deep stage IV sleep usually takes about an hour.
Detailed explanation-3: -Stage 4-REM Sleep The first round of REM in a night lasts about 10 minutes, with the stage getting longer and longer each time you enter REM in one night1. It’s also the deepest stage of sleep, where you’ll experience1: Quickened breathing. Faster heart rate and blood pressure.
Detailed explanation-4: -The most consistent alterations associated with normal aging include increased number and duration of awakenings and decreased amounts of deep slow wave (SW) sleep (ie, stages 3 and 4 of non–rapid eye movement (non-REM) sleep).
Detailed explanation-5: -During the early sleep cycles, N3 stages commonly last for 20 to 40 minutes. As you continue sleeping, these stages get shorter, and more time gets spent in REM sleep instead.