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Definition of Slow-wave sleep

Slow-wave sleep: Stage 3 and 4 non-rapid eye movement (non-REM) sleep.

Slow-wave sleep is characterized by brain wave patterns (electroencephalogram or EEG) with a frequency of less than 4 Hz and peak-to-peak amplitude of 75 microV.

QUESTION

Why do we sleep? See Answer
Reviewed on 12/11/2018
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