Feinberg I, Floyd T C, March J D
Electroencephalogr Clin Neurophysiol. 1987 Sep;67(3):217-21. doi: 10.1016/0013-4694(87)90019-8.
One night's sleep loss in young adults increased delta (0.3-3 Hz) EEG only in the first non-REM period of recovery sleep. The delta increase was limited to frequencies 0.3-4 Hz; within this range, the effects on wave form periods and amplitudes differed by frequency band. These results illustrate the value of computer analysis applied to the physiological units of sleep (the successive non-REM and REM periods of each sleep cycle). The finding that all of the delta increase occurred in the first sleep cycle appears inconsistent with the exponential decline of delta across cycles predicted by 'recovery' models of sleep. The fact that wave periods and amplitudes are differentially affected by sleep loss indicates that it is premature to adopt any single wave form characteristic (e.g., power spectral density) to index delta sleep. Our data also confirm a recent report that eye movement density decreases after sleep loss; we hypothesize that this change results from greater depth of sleep; an inverse relation of depth of sleep to eye movement density provides a coherent explanation for a range of otherwise disparate observations. Lastly, we propose a new hypothesis to account for the presence of eye movement during REM sleep.
年轻成年人一晚睡眠缺失仅在恢复睡眠的首个非快速眼动期增加了δ波（0.3 - 3赫兹）脑电图。δ波增加局限于0.3 - 4赫兹频率范围；在此范围内，对波形周期和振幅的影响因频段而异。这些结果说明了计算机分析应用于睡眠生理单元（每个睡眠周期连续的非快速眼动期和快速眼动期）的价值。所有δ波增加都出现在首个睡眠周期这一发现，似乎与睡眠“恢复”模型预测的跨周期δ波指数下降不一致。睡眠缺失对波周期和振幅有不同影响这一事实表明，采用任何单一波形特征（如功率谱密度）来衡量δ睡眠还为时过早。我们的数据还证实了最近一份报告，即睡眠缺失后眼动密度降低；我们推测这种变化是由于睡眠深度增加所致；睡眠深度与眼动密度的反比关系为一系列原本 disparate 的观察结果提供了连贯的解释。最后，我们提出一个新假设来解释快速眼动睡眠期间眼动的存在。
