Nonlinear Phenomena in Complex Systems, 2002, Vol.5, No.3, pp.302-307

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2002, Vol.5, No.3, pp.302-307

Fluctuation Analysis of Human Electroencephalogram. pp.302-307
Rudolph C. Hwa and Thomas C. Ferree

The scaling behaviors of the human electroencephalogram (EEG) time series are studied using detrended fluctuation analysis. Two scaling regions are found in nearly every channel for all subjects examined. The scatter plot of the scaling exponents for all channels (up to 129) reveals the complicated structure of a subject's brain activity. Moment analyses are performed to extract the gross features of all the scaling exponents, and another universal scaling behavior is identified. A one-parameter description is found to characterize the fluctuation properties of the nonlinear behaviors of the brain dynamics.
Key words: scaling behavior, brain activity, human electroencephalogram, detrended fluctuation analysis, neuronal dynamics.

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