sleep stage 3

sleep stage 3

NREMS stage 3 Sleep disorders A stage of NREM sleep Accounts for 4-6% of total sleep time; with stage 4, it constitutes “deep” NREM sleep; often lumped with stage 4 into NREMS stage 3/4 because of lack of documented physiologic differences; appears usually only in 1st third of sleep period
References in periodicals archive ?
Sp[O.sub.2]: minimum oxyhaemoglobin saturation; N1: sleep stage 1; N2: sleep stage 2; N3: sleep stage 3; ODI: oxygen desaturation index; REM: rapid eye movement; TST: total sleep time.
(4) NREM sleep stage 3 (NREM3): this sleep stage is also called the deep sleep.
The time spent in non-rapid-eye movement (NREM) sleep stage 3 on the test night was significantly less in comparison with that on the control night.
The proportions of each sleep stage were shown as follow: the proportion of sleep Stage 1 was 9.3% [+ or -] 5.1% (range: 3.8%–17.0%); the proportion of sleep Stage 2 was 50.5% [+ or -] 8.2% (range: 37.1%–58.8%); the proportion of sleep Stage 3 was 18.4% [+ or -] 9.1% (range: 7.6%–33.7%); and the proportion of REM sleep was 21.8% [+ or -] 3.9% (range: 15.6%–26.2%).{Table 3}
Sleep architecture of Stage 2 sleep proportion EEG spectrum beta and gamma relative power value in DISBT group were lower than those before treatment (P less than 0.05) Stage 3 sleep proportion and delta relative power value were higher than those before treatment (P less than 0.05); Sleep architecture of Stage 2 sleep proportion beta and gamma relative power value in control group were higher than those before treatment (P less than 0.05); rapid eye movement sleep Stage 3 sleep proportion and delta relative power value were lower than those before treatment (P less than 0.05).