QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:HAI实验中EEG信号的非线性动力学研究

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Date of Publication:2005-08-30

Journal:中国生物医学工程学报

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:24

Issue:4

Page Number:408-415

ISSN No.:0258-8021

Key Words:混沌;脑电;HAI实验;相图;功率谱;关联维数;Lyapunov指数

Abstract:采用一维时间序列相空间重构技术和混沌的定量判据,对缺氧窒息而引起的中枢神经损伤(Hypoxic-Asphyxic Injury, HAI)实验中仔猪的脑电(Electroencephalogram, EEG)信号进行了分析与计算.通过对生理和损伤状态下仔猪EEG信号的相图、功率谱、关联维数和Lyapunov指数的对比研究,得出如下结论:(1)EEG的相图、功率谱、关联维数和Lyapunov指数反映了大脑的总体动态特征,它们可作为一种定量研究EEG的新方法进行脑损伤的早期诊断;(2)在正常的生理状态下EEG是混沌的,而在损伤状态下则趋于有序.

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