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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Six to seven
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Three to four
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One to two
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Four to five
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Detailed explanation-1: -Approximately 75% of sleep is spent in the NREM stages, with the majority spent in the N2 stage.[14] A typical night’s sleep consists of 4 to 5 sleep cycles, with the progression of sleep stages in the following order: N1, N2, N3, N2, REM.[15] A complete sleep cycle takes roughly 90 to 110 minutes.
Detailed explanation-2: -In a typical night, a person goes through four to six sleep cycles. See Full Reference . Not all sleep cycles are the same length, but on average they last about 90 minutes each.
Detailed explanation-3: -There are traditionally 4 stages of sleep: awake, light, deep, and REM sleep. Each one plays an essential role in maintaining your mental and physical health. As you’re reading about sleep, you may also see the terms “NREM” or “NREM Stages 1-4.” These are simply other terms for the phases of sleep.
Detailed explanation-4: -In the current rules, NREM stage 3 and NREM stage 4 are combined as stage N3. Sleep stages occur in cycles lasting 90 to 120 minutes each. Four to five cycles occur during a typical night of sleep.
Detailed explanation-5: -Your body cycles through four stages of sleep throughout the night. One cycle takes about 90 minutes. During a typical night’s sleep, you’ll cycle through each stage four to six times. If you’re limiting yourself to 4 hours of sleep, you’ll only have time to cycle through these stages twice.