摘要
采用混沌动力学方法与分形方法对气功态下的诱发电位信号进行处理.给出了受试者在接受声音刺激后,在其头皮上所获取的不同脑功能状态下的一维时间一幅值响应和频率响应以及由时间序列重构的相空间曲线.实验结果发现脑功能的改变将引起其分形维数的变化.
This paper reports a method of chaos and fractal for a study of the auditory evoked potential of the brain stem. The results of one-dimensional time-amplitude, frequency-amplitude and phase-space curve reconstructed in time series were obtained from the scalp electrodes in different brain states. Algorithms of correlation dimension are used to obtain the fractal dimension of the time serial in different states before, during and after the exercise. The result shows that the dimension during exercise is lower than those before and after The phase-space curves are used to analyze the obvious different conditions in different brain states. The principle of the study of the EEG signal with chaos theory consists in that the human body is taken as a nonlinear dynamic system and the variables of the system can be described by fractal dimension.
出处
《华中理工大学学报》
CSCD
北大核心
1993年第5期121-125,共5页
Journal of Huazhong University of Science and Technology
关键词
混沌
分形
脑电
相空间
气功态
bioengineering
chaos
fractal
EEG
phase space
qigong state biomedicine
