人的睡眠分快波睡眠和慢波睡眠两个阶段,而梦一般发生在快波睡眠阶段,人在一夜的睡眠中,从无意识的沉睡进入奇妙的梦幻,一般2～6次。在做梦的这个阶段,眼球在闭着的眼皮下转动,这对人脑虽说是相对静止的,其实它是处在活动状态的,这时可从脑电波中测出快速紊乱的电波。其强度有时竟能超过白天活动的强度。但脑内有一种神经中心,它的职能就是在人做梦时抑制肌肉活动,使梦中的行为不会超出精神范围而变成行为。 Human sleep points fast wave sleep and slow wave sleep in two stages, and the dream generally occurs in fast wave sleep stage, sleep in the night, from unconscious sleep into the wonderful dream, usually 2 to 6 times. At this stage of dreaming, the eye turns under a closed eyelid, which is relatively static to the human brain. In fact, it is in an active state. In this moment, a rapidly disturbing radio wave can be detected from brain waves. Sometimes its strength can exceed the intensity of daytime activities. But there is a nerve center in the brain, its function is to inhibit muscle activity when people dream, so that the behavior of the dream will not go beyond the spirit of the range and become behavior.