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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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: -Sleep spindles may be present in all stages of NREM, but they are most prevalent in stage 2 sleep.
Detailed explanation-2: -Stage N2 Sleep Sleep spindles typically appear between 4 and 6 weeks of age. These rudimentary spindles are noted to be maximal over the central (vertex) regions and are typically of relatively lower amplitude and slightly lower frequency, but tend to remain about 12–14 Hz.
Detailed explanation-3: -Sleep spindles are characteristic electroencephalogram (EEG) signatures of stage 2 non-rapid eye movement sleep.
Detailed explanation-4: -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.