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synchronization clusters located on epileptic onset zones in neocortical epilepsy

Acta Epileptologica 2022年第4期5卷 233-241页

作者： Yanping Sun Yuqiang Song Hongjin Ren Haifang Zhu Yanning Wang Xiaoli Li Wenjing Yan Yuping Wang Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijing100053China Department of Neurology The Affiliated Hospital of Qingdao UniversityQingdao266003China Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China School of Science Yanshan UniversityQinhuangdao066004China State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal UniversityBeijing100875China

Background Brain function is thought to rely on complex interactions of dynamic neural systems,which depend on the integrity of structural and functional *** epilepsy is considered to result from excessive focal synchronization in the *** analysis of multichannel electrocorticography(ECoG)contributes to the understanding of and orientation of *** aim of this study was to explore the synchronization in multichannel ECoG recordings from patients with neocortical epilepsy and characterize neural activity inside and outside the onset *** Four patients with neocortical epilepsy,who became seizure-free for more than 1 year after surgery guided by ECoG monitoring,were included in this *** data recorded during pre-surgical evaluation were *** in phase and amplitude of different frequency bands between ECoG channels was analyzed using *** generated 100 surrogate data from the original ECoG data using Amplitude Adjusted Fourier Transform to calculate the enhanced *** relationship between synchronization characteristics and seizure onset zone was *** We found synchronization clusters in the 14–30 Hz and 30–80 Hz bands around the onset areas during both interictal and the beginning of ictal periods in all four *** The enhanced-synchronization clusters play a central role in epilepsy,and may activate the onset areas and contribute to the spreading of epileptiform activity.

关键词： Epilepsy synchronization clusters ECoG Seizure onset areas

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