Scale invariance of human electroencephalogram signals in sleep

被引：19

作者：

Cai, Shi-Min ^{[1
]}

Jiang, Zhao-Hui ^{[1
]}

Zhou, Tao ^{[2
,3
]}

Zhou, Pei-Ling ^{[1
]}

Yang, Hui-Jie ^{[4
]}

Wang, Bing-Hong ^{[2
,4
]}

机构：

[1] Univ Sci & Technol China, Dept Elect Sci & Technol, Anhua 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Anhua 230026, Peoples R China

[3] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

[4] Shanghai Acad Syst Sci, Inst Complex Adapt Syst, Shanghai 200093, Peoples R China

来源：

PHYSICAL REVIEW E | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.76.061903

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In this paper, we investigate the dynamical properties of electroencephalogram (EEG) signals of humans in sleep. By using a modified random walk method, we demonstrate that scale-invariance is embedded in EEG signals after a detrending procedure is applied. Furthermore, we study the dynamical evolution of the probability density function (PDF) of the detrended EEG signals by nonextensive statistical modeling. It displays a scale-independent property, which is markedly different from the usual scale-dependent PDF evolution and cannot be described by the Fokker-Planck equation.

引用

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