Tassi P, Nicolas A, Seegmuller C, Dewasmes G, Libert J P, Muzet A
Laboratoire de Physiologie et de Psychologie Environnementales, Strasbourg, France.
Percept Mot Skills. 1993 Dec;77(3 Pt 2):1239-48. doi: 10.2466/pms.1993.77.3f.1239.
Only a few studies have been devoted to the interaction of noise with sleep deprivation and time of day. In a previous study we demonstrated that noise had an alerting effect on cognitive performance during the early night but not during the late night. However, it was not clear whether these different effects of noise were related to prior sleep debt or to time of day as both factors varied simultaneously. In the present experiment, we further studied this issue to identify which of these two factors was responsible for the noise effects. Analysis showed that, when performance was tested at different times with an equivalent prior sleep debt, noise improved speed of response at 0500 but not at 0800 at which variability of response time increased. Noise had no effect on errors. It is suggested that the effect of noise depends on the underlying arousal and raises arousal from its low level due either to time of day or to partial sleep deprivation.
仅有少数研究致力于探讨噪声与睡眠剥夺及一天中不同时段之间的相互作用。在之前的一项研究中，我们证明了噪声在夜间早期对认知表现具有唤醒作用，但在深夜则不然。然而，尚不清楚噪声的这些不同影响是与先前的睡眠债有关，还是与一天中的时段有关，因为这两个因素是同时变化的。在本实验中，我们进一步研究了这个问题，以确定这两个因素中哪一个是造成噪声影响的原因。分析表明，当在等效的先前睡眠债情况下于不同时间测试表现时，噪声提高了凌晨5点时的反应速度，但在早上8点时却没有，此时反应时间的变异性增加。噪声对错误率没有影响。有人认为，噪声的影响取决于潜在的唤醒水平，并且由于一天中的时段或部分睡眠剥夺，会将唤醒水平从低水平提高。
