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A RESEARCH ON THE PARAMETERS INVOLVED IN THE CALCULATION OF EEG CORRELATION DIMENSION
对脑电相关维数计算中有关参数的探讨

Keywords: Electroencephalogram,Correlation dimension,Time delay,Embedding dimension
脑电
,相关维数,时间延迟,嵌入维数,脑电图

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Abstract:

Grassberger Procaccia algorithm is used to calculate the correlation dimension of 8-channel human EEG signals. T'he influences of length of time series, time delay and embedding dimesion on the value of EEG correlation dimension were investigated. It indicated that the results of calculation are greatly influenced by the reasonable choice of parameters. Besides, it seemed that EEG signals can not be defined as a stable chaotic attractor. Therefore,the attempt to take the correlation dimension as a precise and objective parameter to indicate human brain functions in different physiological states is almost unfeasible.

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