An autoregressive method for the measurement of synchronization of interictal and ictal EEG signals

被引:58
作者
Franaszczuk, PJ [1 ]
Bergey, GK
机构
[1] Univ Maryland, Sch Med, Dept Neurol, Baltimore, MD 21201 USA
[2] Univ Maryland, Med Ctr, Maryland Epilepsy Ctr, Baltimore, MD 21201 USA
[3] Univ Maryland, Sch Med, Dept Physiol, Baltimore, MD 21201 USA
关键词
D O I
10.1007/s004220050540
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
We propose a new measure of synchronization of multichannel ictal and interictal EEG signals. The measure is based on the residual covariance matrix of a multichannel autoregressive model. A major advantage of this measure is its ability to be interpreted both in the framework of stochastic and deterministic models. A preliminary analysis of EEG data from three patients using this measure documents the expected increased synchronization during ictal periods but also reveals that increased synchrony persists for prolonged periods (up to 2 h or more) in the postictal period.
引用
收藏
页码:3 / 9
页数:7
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