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Scale-invariance of human EEG signals in sleep

Shi-Min Cai·Zhao-Hui Jiang·Tao Zhou·Pei-Ling Zhou·Hui-Jie Yang·Bing-Hong Wang
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Abstract

We investigate the dynamical properties of electroencephalogram (EEG) signals of human in sleep. By using a modified random walk method, We demonstrate that the scale-invariance is embedded in EEG signals after a detrending procedure. Further more, we study the dynamical evolution of probability density function (PDF) of the detrended EEG signals by nonextensive statistical modeling. It displays scale-independent property, which is markedly different from the turbulent-like scale-dependent PDF evolution.

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Shi-Min Cai, Zhao-Hui Jiang, Tao Zhou, Pei-Ling Zhou, Hui-Jie Yang, Bing-Hong Wang. 2007-03-12. Scale-invariance of human EEG signals in sleep. https://doi.org/10.1103/physreve.76.061903

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