Dynamics of spontaneous transitions between global brain states.
Phase patterns of human scalp alpha EEG activity show spontaneous transitions between different globally phase-synchronized states. We studied the dynamical properties of these transitions using the method of symbolic dynamics. We found greater predictability (deterministicity) and heterogeneity in the dynamics than what was expected from corresponding surrogate series in which linear correlations are retained. A possible explanation of these observations within the framework of chaotic itinerancy is discussed.
Ito
Junji
J
Laboratory for Perceptual Dynamics, Brain Science Institute, RIKEN, Wako-shi, Saitama, Japan. j-ito@brain.riken.jp
Nikolaev
Andrey R
AR
van Leeuwen
Cees
C
D000328:Adult; D000465:Algorithms; D000513:Alpha Rhythm; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D003627:Data Interpretation, Statistical; D004569:Electroencephalography; D019277:Entropy; D005260:Female; D006801:Humans; D007257:Information Theory; D008297:Male; D013997:Time Factors