Mean phase coherence as a measure for phase synchronization and its application to the EEG of epilepsy patients
Mean phase coherence as a measure for phase synchronization and its application to the EEG of epilepsy patients
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DOI：
10.1016/s0167-2789(00)00087-7
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发表时间：
2000-10-01
期刊：
影响因子：
4
通讯作者：
Elger, CE
中科院分区：
文献类型：
--
作者：
Mormann, F;Lehnertz, K;Elger, CE
我们将混沌和/或噪声系统的相位同步的概念和相对瞬时相位的统计分布应用于从颞叶癫痫患者记录的脑电。使用平均相位相干性作为相位同步的统计度量，我们观察到同步的特征空间和时间移位，这些移位似乎与病理活动密切相关。特别是，我们观察到无癫痫发作间期的记录与即将发作之前的记录之间同步程度的明显差异，表明癫痫发作活动之前的大脑动力学状态发生了变化。(C)2000 Elsevier Science B.V.保留所有权利。
We apply the concept of phase synchronization of chaotic and/or noisy systems and the statistical distribution of the relative instantaneous phases to electroencephalograms (EEGs) recorded from patients with temporal lobe epilepsy. Using the mean phase coherence as a statistical measure for phase synchronization, we observe characteristic spatial and temporal shifts in synchronization that appear to be strongly related to pathological activity. In particular, we observe distinct differences in the degree of synchronization between recordings from seizure-free intervals and those before an impending seizure, indicating an altered state of brain dynamics prior to seizure activity. (C) 2000 Elsevier Science B.V. All rights reserved.