Dynamic scaling behavior of human brain electroencephalogram

• DOI: 10.1016/j.physa.2005.09.038
• Publication Date: 2005-10-11T07:23:11Z
• Authors: J.W. Yuan; B. Zheng; C.P. Pan; Y.Z. Wu; S. Trimper
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract After filtering out the α and β peaks in the power spectrum of the human brain electroencephalogram signals Y ( t ′ ) , the probability distribution of the variation Δ Y ( t ′ ) ≡ Y ( t ′ + Δ t ) - Y ( t ′ ) exhibits a dynamic scaling behavior. The auto-correlation functions, persistence probabilities and detrended fluctuation functions of the time series | Δ Y ( t ′ ) | all show a nontrivial power-law behavior. These results indicate that the dynamics of the human brain electroencephalogram is long-range correlated in time.