Mathematical structures for epilepsy: High-frequency oscillation and interictal epileptic slow (red slow)

被引:1
|
作者
Namiki, Takao [1 ]
Tsuda, Ichiro [2 ]
Tadokoro, Satoru [1 ]
Kajikawa, Shunsuke [3 ]
Kunieda, Takeharu [4 ]
Matsumoto, Riki [5 ]
Matsuhashi, Masao [6 ]
Ikeda, Akio [6 ]
机构
[1] Hokkaido Univ, Fac Sci, Dept Math, Kita Ku, Kita 10 Nishi 8, Sapporo, Hokkaido 0600810, Japan
[2] Chubu Univ, Acad Emerging Sci, 1200 Matsumoto Cho, Kasugai, Aichi 4878501, Japan
[3] Kyoto Univ, Dept Neurol, Grad Sch Med, Sakyo Ku, Kyoto 6068507, Japan
[4] Ehime Univ, Dept Neurosurg, Grad Sch Med, 454 Shitsukawa, Toon, Ehime 7910295, Japan
[5] Kobe Univ, Div Neurol, Grad Sch Med, Chuo Ku, 7-5-1 Kusunoki Cho, Kobe, Hyogo 6500017, Japan
[6] Kyoto Univ, Dept Epilepsy Movement Disorder & Physiol, Sakyo Ku, Kyoto 6068507, Japan
关键词
Epilepsy; High frequency oscillation; Power spectrum; Dynamical system; Oscillology; DIRECT-CURRENT SHIFTS;
D O I
10.1016/j.neures.2019.11.008
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In the present study, we attempted to characterize two characteristic features within the dynamic behavior of wideband electrocorticography data, which were recorded as the brain waves of epilepsy, comprising high-frequency oscillations (HF0s) and interictal epileptic slow (red slow). The results of power spectrum and nonlinear time series analysis indicate that, on one hand, HFOs at epileptic focus are characterized by one-dimensional dynamical systems in ictal onset time segments at an epileptic focus for two patients' datasets; on the other hand, an interictal epileptic slow is characterized by the residue of power spectrum. The results suggest that the degree of freedom of the brain dynamics during epileptic seizure with HFO degenerates to low-dimensional dynamics; hence, the interictal epileptic slow as the precursors of the seizure onset can be detected simply from interictal brain wave data for the dataset of one patient. Therefore, our results are essential to understand the brain dynamics in epilepsy. (C) 2019 Elsevier B.V. and Japan Neuroscience Society. All rights reserved.
引用
收藏
页码:178 / 187
页数:10
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