Scale-invariant fluctuations of the dynamical synchronization in human brain electrical activity

The dynamical properties of large-scale, long-term phase synchronization behavior in the alpha range of electroencephalographic signals were investigated. We observed dynamical phase synchronization and presented evidence of an underlying spatiotemporal ordering. Fluctuations in the duration of epis...

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Bibliographic Details
Published in:Neuroscience letters 2003-01, Vol.336 (1), p.33-36
Main Authors: Gong, Pulin, Nikolaev, Andrey R., van Leeuwen, Cees
Format: Article
Language:English
Subjects:
Adolescent
Adult
Alpha Rhythm
Alpha rhythms
Biological and medical sciences
Brain - physiology
Central nervous system
Cortical Synchronization
Electroencephalographic signals
Electroencephalography
Electrophysiology
Fourier Analysis
Fundamental and applied biological sciences. Psychology
Humans
Models, Neurological
Nonlinear Dynamics
Phase synchronization
Scale-invariant
Self-organizing systems
Signal Processing, Computer-Assisted
Time Factors
Vertebrates: nervous system and sense organs
Wavelet
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Summary:The dynamical properties of large-scale, long-term phase synchronization behavior in the alpha range of electroencephalographic signals were investigated. We observed dynamical phase synchronization and presented evidence of an underlying spatiotemporal ordering. Fluctuations in the duration of episodes of intermittent synchrony are scale-invariant. Moreover, the exponent used to describe this behavior is stable across different normal subjects. The results provide a new feature of self-organization in human brain activity and constitute a quantitative basis for modeling its dynamics.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(02)01247-8