Kulaichev A P
Zh Vyssh Nerv Deiat Im I P Pavlova. 2012 Jan-Feb;62(1):108-19.
We used a new methodological approach to the evaluation of EEG synchronization based on correlation between amplitude modulation processes (EEG envelopes). We revealed: left-hemispheric dominance and dominance of frontal over occipital regions characteristic of all sleep stages; differences in synchronization in frequency bands and their patterns characteristic of a specific sleep stage; stage-dependent differences in inter-hemispheric synchrony and patterns of their changes from the frontal to occipital regions; and stage-dependent topographical distributions of high synchronization foci with respect to frequency domains. Analysis of amplitude topography also revealed left-hemispheric dominance and many significant differences in activity distribution patterns over parasagittal chains of electrodes (meridians) depending on sleep stages and frequency domains. The combination of EEG synchrony estimates with the amplitude spectral estimates made it possible to perform a reliable discriminant recognition of five sleep stages with errors in the range of 3-20%.
我们采用了一种基于幅度调制过程（脑电图包络）之间相关性的脑电图同步评估新方法。我们发现：所有睡眠阶段均具有左半球优势以及额叶相对于枕叶区域的优势；特定睡眠阶段特有的频段同步差异及其模式；半球间同步及其从额叶到枕叶区域变化模式的阶段依赖性差异；以及高同步焦点相对于频域的阶段依赖性地形分布。幅度地形图分析还揭示了左半球优势以及电极矢状旁链（子午线）上活动分布模式因睡眠阶段和频域而异的许多显著差异。脑电图同步估计与幅度谱估计的结合使得能够对五个睡眠阶段进行可靠的判别识别，误差范围在3%至20%之间。
