睡眠剥夺条件下小睡对划消测验和事件相关电位P300的影响

目的：探讨小睡对连续40小时睡眠剥夺的应对作用。方法：8名青年被试做自身前后对照，睡眠剥夺时间从第一天的6：00到第二天的22：00，共为40小时，在实验过程中给予打字的工作负荷。小睡时间分别为每天中午的13：00和晚间的1：00，共3次，每次30分钟，同时用脑电图进行监测，在晚间1：00和实验结束时分别测量视觉事件相关电位。并且在实验开始前、实验结束后2天和每次小睡后30分钟后测量划消测验。结果：无论是睡眠剥夺组还是加入小睡组，被试的作业反应时延长、正确数降低，漏划数增加。同完全睡眠剥夺相比，加入小睡后，被试划消测验的反应时明显缩短，正确数及漏划数无明显变化。无论是睡眠剥夺组还是加入小睡组，实验结束后两天的恢复值同实验前相比无明显差异。睡眠剥夺组的P300潜伏期明显延长，正确率降低，但振幅无明显变化。加入小睡后P300潜伏期明显缩短，正确率、振幅没有明显变化。结论：小睡对睡眠剥夺有一定的应对作用。

Effects of Naps during Sleep Deprivation on Symbols Recognizing Task and P300

Objective:To study the effect of 30-min nap at three low points of the rhythm during 40-hour sleep deprivation Method:Eight young subjects having normal sleep-wake habits were subjected to nap and total sleep deprivation conditions at an interval of 2 weeks The whole experiment was from 6:00 of the first day to 22:00 totally 40 hours The typing workload was given There were three times of naps, which lasted 30 min every time, at 13:00 (the first day), 1:00 and 13:00 (the second day) Visual event related potentials were measured at 1:00 and the end Symbol recognizing task was given before the experiment, after each nap, at the end of it, and two days after Results:In the symbols recognizing task, whether sleep deprivation with or without naps, the reactive time prolonged, the number of right decreased, the number of lose increased Compared with total sleep deprivation, the reactive time was shortened apparently while the number of right and lose did not change when naps were introduced Whether sleep deprivation with or without naps, the latency of P300 was prolonged, the number of right decreased while the amplitude did not change Compared with total sleep deprivation, the latency was shortened apparently while the number of right and amplitude did not change when having naps Conclusion:Nap has positive effects during sleep deprivation