一天辛苦学习下来,同学们都想美美睡上一觉吧,可偏偏老是会做恶梦,到底是怎么回事呢?一般睡眠具有两种不同的时相状态:一种是慢波睡眠,此时睡眠非常酣熟,通常不会做梦;另一种叫异相睡眠,此时睡得就不那么酣熟了,容易做梦。一夜有4￣5次异相睡眠期,有时会接二连三地做梦。在异相 After a hard day’s work, the students all want to sleep in the United States and the United States, but it is always possible to have a nightmare. What is going on? General sleep has two different phases: one is slow wave sleep, At this point sleep is very skillful, usually not dreaming; another kind of sleep called out of phase, at this time to sleep is not so familiar, easy to dream. There are 4 to 5 out-of-phase sleep periods overnight, sometimes dreaming one after another. In the opposite