基于部分相位同步的中少年脑电分析

Teenage and Middle-Aged EEG Analysis Based on Partial Phase Synchronization

应用一种基于部分相位同步的算法,该算法与双变量相位同步分析方法相比,在多变量非线性系统中能有效地推断直接耦合关系还是间接耦合关系,因此,可以用此方法判定系统之间的耦合程度。首先把该方法应用于3个耦合的Rossler混沌系统中,仿真结果表明,部分相位同步方法能够准确地推断Rossler系统之间的耦合关系。然后应用该方法对少年人脑电与中年人脑电进行分析,实验结果表明,少年人脑电耦合程度与中年人脑电耦合程度有显著的差异,说明部分相位同步算法可以作为区分中少年脑电信号的一个依据。

A method based on partial phase synchronization was employed which can distinguish the direct coupling and indirect coupling effectively in a multivariate nonlinear system compared to the bivariate phase synchronization.Applying this method to three coupled stochastic Rossler oscillators,the result reveals that the analysis of partial phase synchronization can infer the correct interactions among oscillators.Using the method to analyze the teenage EEG and middle-aged EEG,the result shows that the coupling degrees of teenage EEG and middle-aged EEG are significantly different.The method of partial phase synchronization can be a reference to distinguish teenage and middle-age EEGs.