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From Polyphasic Sleep Wiki
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| NREM第一阶段占单相成人总睡眠的5至10%,是所有NREM阶段中最浅的睡眠阶段。在这个阶段中,对外部环境和对自身的意识都会有所减弱。部分人在这个阶段会出现抽搐或临睡幻觉。 NREM1中[[Wikipedia:alpha waves|Alpha波]]和[[Wikipedia:theta waves|Theta波]]会混合存在。 | | NREM第一阶段占单相成人总睡眠的5至10%,是所有NREM阶段中最浅的睡眠阶段。在这个阶段中,对外部环境和对自身的意识都会有所减弱。部分人在这个阶段会出现抽搐或临睡幻觉。 NREM1中[[Wikipedia:alpha waves|Alpha波]]和[[Wikipedia:theta waves|Theta波]]会混合存在。 |
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| + | NREM第二阶段是比第一阶段更深的睡眠,占总睡眠的45至55%。与NREM1相比,在NREM2中更难被唤醒。这个阶段的特征是[[Wikipedia:K-complex|K-复合波]]和[[Wikipedia:sleep spindles|睡眠梭状波]],即Alpha波活动的突然中断。这阶段的睡眠也负责维持长时间的清醒状态。 |
− | NREM Stage 2, accounting for 45-55% of total sleep, is deeper than the first one. It is more difficult to be awaken from than from the NREM 1. This stage is characterized by [[Wikipedia:K-complex|K-complexes]] and [[Wikipedia:sleep spindles|sleep spindles]], which are abrupt interruptions in alpha waves activity. This stage of sleep also plays a role in maintaining wakefulness over long periods.
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