本文复习了半个世纪以来有关脑电和睡眠个体发生的资料。有一类动物的脑电发生在胚胎的中期,另一类大约发生在出生前后。无论脑电发生的时间如何,其最初出现时均以低幅非连续快波为特征,而后演变为特征性高压慢活动和低压快活动。在前一类动物,胚胎期快眠动睡眠量很高,随着发育成熟逐渐减少,觉醒期则相反。在出生时,睡醒周期接近成熟水平。 This article reviews information about the occurrence of EEG and sleeping individuals in the past half century. One type of animal’s EEG occurs in the mid-embryo and the other occurs approximately before and after birth. No matter what the time of EEG occurred, it was initially characterized by low amplitude non-continuous fast waves and then evolved into characteristic high pressure slow activity and low pressure rapid activity. In the former group of animals, the amount of fasting sleep during the embryonic period is very high, with the gradual decrease of maturation and the awakening phase. At birth, the waking cycle is approaching the level of maturity.