首页> 外文会议>Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE >Characterization of interictal and ictal scalp EEG signals with the Hilbert transform
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Characterization of interictal and ictal scalp EEG signals with the Hilbert transform

机译:用希尔伯特变换表征发作性和发作性头皮脑电信号

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The present paper reports on the application of the Hilbert transform to biological time series of the brain electrical activity of epilepsy patients. The Hilbert transform will be used to estimate the instantaneous frequency, the instantaneous amplitude and the phase synchronization of scalp EEG recordings. As a fourth measure derived from the Hilbert transform we will define a measure of rhythmicity. The purpose of this paper is to combine the time evolution of these four measures to come to a characterization of the dynamics present in, and between, different EEG channels. By applying these measures to scalp EEG recordings of patients with Mesial Temporal Lobe Epilepsy we will show that they are useful for off-line analysis of large amounts of EEG data. Because all these measures are derived from the fast Hilbert transform it is also possible to use them as an analysis tool for online monitoring.
机译:本文报道了希尔伯特变换在癫痫患者脑电活动的生物学时间序列中的应用。希尔伯特变换将用于估计头皮脑电图记录的瞬时频率,瞬时幅度和相位同步。作为从希尔伯特变换得出的第四个小节,我们将定义节奏的小节。本文的目的是结合这四种方法的时间演变,以表征不同EEG通道内和之间存在的动力学特征。通过将这些措施应用于中颞叶癫痫患者的头皮脑电图记录,我们将显示它们可用于大量脑电图数据的离线分析。由于所有这些度量均来自快速的希尔伯特变换,因此也可以将它们用作在线监视的分析工具。

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