希望活得理想一点儿。梦里面有很多幻想,有很多灵感,或许能把白天的问题分解的清晰。


REM-repid eyes movement快速眼球运动亦称异相睡眠(Para-sleep)、非常规的睡眠(paradoxical sleep)、快波睡眠(fast wavesleep)、激活睡眠(activatedsleep)。自从阿瑟林斯基、克雷特曼(E.Aserinsky,N.kleitman,1953)发现睡眠中出现有快速眼球运动(rapideye movement,REM)的时相以来,很快对它进行了研究。在此时相中,肌肉紧张(tonus)虽消失,但外眼肌、颜面肌、手指肌却能突然地发生收缩。心搏、呼吸、血压等植物性机能不稳定而发生波动。虽然在深睡眠状态下,意识完全消失,但脑电波上却显示有与觉醒时同样的低振幅快波(异相睡眠的辞源)。在这个时相中常常做梦(70—80%)。把这以外的时相称为NREM(non-REM sleep)、常规睡眠(ortho-sleep)或慢波睡眠(slow wave sle-ep)。睡眠中,NREM相和REM相可反复地进行,因为成人的REM相持续5—20分钟左右,周期约90分钟,所以一夜间REM相要出现3—6次,占睡眠时间的20—25%。新生儿的REM相占50%,随年龄的增加而缩短。
Rapid eye movement (REM) sleep is normal stage of sleep characterized by rapid movements of the eyes. REM sleep is classified into two categories: tonic and phasic.[1] It was discovered by Kleitman and Aserinsky in the early 1950s (see below).
Criteria for REM sleep include not only rapid eye movements, but also low muscle tone and a rapid, low voltage EEG -- these features are easily discernible in a polysomnogram, the sleep study typically done for patients with suspected sleep disorders.
REM sleep in adult humans typically occupies 20-25% of total sleep, about 90-120 minutes of a night's sleep. During a normal night of sleep, humans usually experience about 4 or 5 periods of REM sleep; they are quite short at the beginning of the night and longer toward the end. Most people tend to wake, or experience a period of very light sleep, for a short time immediately after a bout of REM. The relative amount of REM sleep varies considerably with age. A newborn baby spends more than 80% of total sleep time in REM. During REM, the summed activity of the brain's neurons is quite similar to that during waking hours; for this reason, the phenomenon is often called paradoxical sleep. This means that there are no dominating brain waves during REM sleep.
REM sleep is physiologically different from the other phases of sleep, which are collectively referred to as non-REM sleep. Vividly recalled dreams mostly occur during REM sleep.