脑卒中后抑郁患者脑电信号长时程相关性分析

发布时间：2018-01-26 10:21

本文关键词： 脑卒中后抑郁受损半球脑电长时程相关性去趋势波动分析　出处：《仪器仪表学报》2017年06期 　论文类型：期刊论文

【摘要】：为调查单侧半球损伤的脑卒中后抑郁患者脑电宽频振荡的长时程相关特性,利用去趋势波动分析这一可量化反映脑电信号长时程相关性的方法,研究了18例脑卒中后抑郁患者(8例左半球受损,10例右半球受损),22例脑卒中后无抑郁患者(12例左半球受损,10例右半球受损)宽频带(0.6~46 Hz)脑电信号在0.2~3 s时间尺度下的长时程相关特性。研究发现,虽然左半球受损抑郁患者较右半球受损患者抑郁情况更为严重,但是仅有右半球受损抑郁患者脑电信号长时程相关性在抑郁相关的脑区有显著性减弱,这暗示了不同半球受损脑卒中患者PSD发生的机制不同,PSD与脑卒中受损部位间存在着复杂的关系。
[Abstract]:For the long depression EEG oscillations survey stroke broadband unilateral hemisphere injury after time correlation, using detrended fluctuation analysis method this can reflect the long range correlation of EEG, depression of 18 stroke patients (8 cases of left hemisphere damage, 10 cases of right hemisphere damage), 22 cases of post-stroke non depression patients (12 cases of left hemisphere damage, 10 cases of right hemisphere damage) broadband (0.6~46 Hz) process related characteristics of EEG signal in 0.2~3 s under long time scale. The study found that although the left hemisphere damaged patients with depression than the right hemisphere damaged patients with depression is more serious however, only the right hemisphere damaged brain EEG depression in patients with long term correlation in depression were significantly decreased, suggesting different mechanisms of impaired hemisphere stroke patients PSD different, PSD and stroke damaged parts between the complex Relationship.

【作者单位】：天津市人民医院康复医学科天津市康复医学研究所;天津大学精仪学院生物医学工程系;
【基金】：天津市卫计委科技攻关项目(14KG107)资助
【分类号】：R743.3;TN911.6
【正文快照】： 1引言人类大脑是自然界中最为复杂的系统之一,通常表现出丰富的时空动力学特征,不同频率的脑电(Electroencephalogram,EEG)信号反映这些特征的变化。已有研究证实不同频率和幅值的神经振荡存在着长时程相关性(long-range temporal correlations,LRTC),有利于大脑皮层神经网络

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