BIOLOGICAL BASES OF BEHAVIOR
BIOLOGY OF CONSCIOUSNESS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The sleep cycle repeats itself every 60 minutes.
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During REM sleep the muscles are tense and brain waves reveal deep relaxation.
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As sleep progresses, Stage 3 and Stage 4 sleep diminish while REM sleep increases.
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Most of a nights sleep is spent in Stage 4 and REM.
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Everyone needs 8 hours of sleep per night.
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Detailed explanation-1: -As sleep progresses, NREM-3 sleep diminishes while REM sleep increases.
Detailed explanation-2: -In stage 3, extremely slow brain waves called delta waves begin to appear, interspersed with smaller, faster waves. By stage 4, the brain produces delta waves almost exclusively. It is very difficult to wake someone during stages 3 and 4, which together are called deep sleep.
Detailed explanation-3: -Sleep occurs in five stages: wake, N1, N2, N3, and REM. Stages N1 to N3 are considered non-rapid eye movement (NREM) sleep, with each stage a progressively deeper sleep.
Detailed explanation-4: -Stage 4: REM sleep In REM sleep, your brain waves and eye movements increase. Your heart rate and breathing also speed up. Dreaming often happens during REM sleep. Your brain also processes information during this stage, making it important for learning and memory.
Detailed explanation-5: -Sleep stages 3 and 4 are collectively referred to as slow-wave sleep (SWS), most of which occurs during the first third of the night.