Scale-invariance of human EEG signals in sleep

Details Scale-invariance of human EEG signals in sleep Scale-invariance of human EEG signals in sleep

2007-03-12

arxiv.org/abs/physics/0703129v1

Physical Review E 76, 061903 (2007)

Physics

Biological Physics

4 pages and 6 figures

Scientific paper

10.1103/PhysRevE.76.061903

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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