Rosa R R, Bonnet M H
Int J Neurosci. 1985 Jul;27(1-2):73-83. doi: 10.3109/00207458509149136.
Attempts to demonstrate sleep stage effects on waking behavior have been equivocal at best. The present study provided a more sensitive approach to this problem by assessing performance and subjective alertness at repeated awakenings across baseline sleep and across recovery sleep following 40 and 64 hours of sleep deprivation. These behaviors were then compared to changes in EEG sleep, body temperature, and auditory threshold within these nights. Comparison of means between baseline and recovery sleep indicated that the behavioral variables were generally more sensitive than sleep stages to different amounts of prior wakefulness. Multiple regression analyses revealed no consistent covariation between behavior and any sleep stage which was independent of the correlations among the sleep stages themselves. Thus, distinct functions for specific sleep stages were not apparent from the comparison of means or the regression analyses. However, significant positive covariations were obtained between body temperature and performance, and auditory threshold and sleepiness. Significant negative covariations were obtained between body temperature and sleepiness, and auditory threshold and performance. From these results it was concluded that the most reliable predictors of behavior upon awakening were: the amount of wakefulness prior to sleep, the total amount of accrued sleep, circadian time as indexed by body temperature, and depth of sleep.
试图证明睡眠阶段对清醒行为的影响，其结果充其量也是模棱两可的。本研究通过评估在基线睡眠期间以及在40小时和64小时睡眠剥夺后的恢复睡眠期间多次醒来时的表现和主观警觉性，为这个问题提供了一种更敏感的方法。然后将这些行为与这些夜晚内脑电图睡眠、体温和听觉阈值的变化进行比较。基线睡眠和恢复睡眠之间的均值比较表明，行为变量通常比睡眠阶段对不同程度的先前觉醒更敏感。多元回归分析显示，行为与任何独立于睡眠阶段之间相关性的睡眠阶段之间没有一致的协变关系。因此，从均值比较或回归分析中，特定睡眠阶段的不同功能并不明显。然而，体温与表现之间以及听觉阈值与嗜睡之间获得了显著的正协变关系。体温与嗜睡之间以及听觉阈值与表现之间获得了显著的负协变关系。从这些结果得出的结论是，醒来时行为的最可靠预测因素是：睡眠前的觉醒量、累计睡眠总量、以体温为指标的昼夜节律时间以及睡眠深度。
