An autoregressive method for the measurement of synchronization of interictal and ictal EEG signals
An autoregressive method for the measurement of synchronization of interictal and ictal EEG signals
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DOI：
10.1007/s004220050540
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发表时间：
1999-07-01
影响因子：
1.9
通讯作者：
Bergey, GK
中科院分区：
文献类型：
--
作者：
Franaszczuk, PJ;Bergey, GK
我们提出了一种新的措施，同步的多通道发作和发作间期脑电信号。该措施是基于多通道自回归模型的残差协方差矩阵。这一措施的一个主要优点是它能够在随机和确定性模型的框架内进行解释。初步分析的EEG数据，从三个病人使用这一措施的文件预期增加同步在发作期，但也揭示了增加同步持续时间较长的时期（最多2小时或更长时间），在发作后期。
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.