Journal
NEW JOURNAL OF PHYSICS
Volume 11, Issue -, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1367-2630/11/10/103051
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Funding
- FP6 NEST-Pathfinder project BRACCIA
- Wellcome Trust
- Engineering and Physical Sciences Research Council (UK)
- Alexander von Humboldt Foundation (Germany)
- EPSRC [EP/D000610/1] Funding Source: UKRI
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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.
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