sleep stage 4

sleep stage 4

NREMS stage 4 Sleep disorders The last period of sleep Accounts for 12-15% of total sleep time, SS4 is similar to NREMS stage 3, except that high-voltage, slow EEG waves cover ≥ 50% of the record; somnambulism, sleep terror, and sleep-related enuresis generally start in stage 4 or during arousals from SS4
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(5) NREM sleep stage 4 (NREM4): this stage is a continuation of deep sleep.