Sleep paralysis, normal when falling asleep or waking, occurs during full consciousness in narcolepsy, with brief but complete inability to move. 发作性睡病病人在入睡或苏醒过程中可能出现睡眠性麻痹，发作时病人头脑清醒，但在短时间内会完全不能活动。
By learning from patients who nod off unexpectedly during the day, researchers hae pinpointed a chemical that could help people who can't sleep at night. 基于对发作性睡病患者的研究，研究人员指出一种化学物质将对夜间失眠患者有帮助。
