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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Physics of brain dynamics: Fokker-Planck analysis reveals changes in EEG delta-theta interactions in anaesthesia
AU - Bahraminasab, Alireza
AU - Ghasemi, Fatemeh
AU - Stefanovska, Aneta
AU - McClintock, P.V.E.
AU - Friedrich, R.
N1 - © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
PY - 2009/10/27
Y1 - 2009/10/27
N2 - We use drift and diffusion coefficients to reveal interactions between different oscillatory processes underlying a complex signal and apply the method to EEG delta and theta frequencies in the brain. By analysis of data recorded from rats during anaesthesia, we consider the stability and basins of attraction of fixed points in the phase portrait of the deterministic part of the retrieved stochastic process. We show that different classes of dynamics are associated with deep and light anaesthesia, and we demonstrate that the predominant directionality of the interaction is such that theta drives delta
AB - We use drift and diffusion coefficients to reveal interactions between different oscillatory processes underlying a complex signal and apply the method to EEG delta and theta frequencies in the brain. By analysis of data recorded from rats during anaesthesia, we consider the stability and basins of attraction of fixed points in the phase portrait of the deterministic part of the retrieved stochastic process. We show that different classes of dynamics are associated with deep and light anaesthesia, and we demonstrate that the predominant directionality of the interaction is such that theta drives delta
KW - Fokker-Planck analysis
KW - brain dynamics
KW - Interactions
KW - EEG
KW - anaesthesia
KW - consciousness
UR - http://www.scopus.com/inward/record.url?scp=72149134872&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/11/10/103051
DO - 10.1088/1367-2630/11/10/103051
M3 - Journal article
VL - 11
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
IS - 10
M1 - 103051
ER -