Penn N E, Kripke D F, Scharff J
J Psychol. 1981 Mar;107 pt 2:247-52. doi: 10.1080/00223980.1981.9915230.
Sleep paralysis is a sensation of an inability to speak or move other muscles when falling asleep or awakening. Sleep paralysis by itself has been reported as occurring infrequently and many clinicians are uncertain of its significance. In contrast, sleep paralysis in conjunction with sleep attacks has been reported as a concomitant of narcolepsy. To further examine the incidence of sleep paralysis, the responses of 80 first-year medical students, 16.25% had experienced predormital, postdormital, or both types of sleep paralysis. These episodes occurred infrequently--only once or twice for most of these students. Reports of sleep paralysis were not associated with sleep attacks or cataplexy. These results support two previous studies which found that sleep paralysis alone occurs frequently among normals.
睡眠瘫痪是指在入睡或醒来时出现无法说话或移动其他肌肉的感觉。据报道，睡眠瘫痪本身很少发生，许多临床医生对其重要性并不确定。相比之下，睡眠瘫痪与睡眠发作同时出现被报道为发作性睡病的一个伴随症状。为了进一步研究睡眠瘫痪的发生率，对80名一年级医学生进行了调查，其中16.25%的学生经历过睡前、睡后或两种类型的睡眠瘫痪。这些发作很少发生——大多数学生只经历过一两次。睡眠瘫痪的报告与睡眠发作或猝倒无关。这些结果支持了之前的两项研究，这两项研究发现正常人群中单独出现睡眠瘫痪的情况很常见。
