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1957年,Dement和Kleitman创建了多导睡眠描记(Polysomnography,PSG),为睡眠研究提供了客观的实验方法,使人类对睡眠的认识有了重大突
In 1957, Dement and Kleitman created Polysomnography (PSG), which provides an objective experimental method for sleep research that has led to a significant human understanding of sleep