Portal de Periódicos da CAPES

Dynamics of spontaneous transitions between global brain states

2007; Wiley; Volume: 28; Issue: 9 Linguagem: Inglês

10.1002/hbm.20316

1097-0193

Junji Ito, Andrey R. Nikolaev, Cees van Leeuwen,

Chaos control and synchronization

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.