偏头痛中α节律的视觉诱发性相位同步变化。与临床特征的相关性。
Visually evoked phase synchronisation changes of alpha rhythm in migraine. Correlations with clinical features.
作者信息
de Tommaso M, Stramaglia S, Marinazzo D, Guido M, Lamberti P, Livrea P
机构信息
Department of Neurological and Psychiatric Sciences, University of Bari, Policlinico, Piazza Giulio Cesare 11, I-70124 Bari, Italy.
出版信息
Neurol Sci. 2004 Oct;25 Suppl 3:S283-4. doi: 10.1007/s10072-004-0311-7.
We investigate phase synchronisation in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hilbert transform, and find that migraine brains are characterised by enhanced alpha band phase synchronisation in the presence of visual stimuli. In migraine, the brain synchronises to the idling rhythm of the visual areas under certain photic stimulations; hypersynchronisation of the alpha rhythm may suggest a state of cortical hypoexcitability during the interictal phase of migraine.
我们研究了偏头痛患者脑电图记录中的相位同步情况。我们使用基于希尔伯特变换的解析信号技术，发现偏头痛患者的大脑在视觉刺激存在时，其特征是α波段相位同步增强。在偏头痛中，大脑在特定的光刺激下会与视觉区域的静息节律同步；α节律的过度同步可能表明偏头痛发作间期皮质兴奋性降低的状态。
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