Journal
CHAOS
Volume 18, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2966112
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Funding
- SSMBS (Schweizerische Stiftung fur Medizinisch-Biologische Stipendien)
- German National Academic Foundation (Studienstiftung)
- Deutsche Forschungsgemeinschaft [SFB-TR3, A2, LE660/4-1]
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We assess electrical brain dynamics before, during, and after 100 human epileptic seizures with different anatomical onset locations by statistical and spectral properties of functionally defined networks. We observe a concave-like temporal evolution of characteristic path length and cluster coefficient indicative of a movement from a more random toward a more regular and then back toward a more random functional topology. Surprisingly, synchronizability was significantly decreased during the seizure state but increased already prior to seizure end. Our findings underline the high relevance of studying complex systems from the viewpoint of complex networks, which may help to gain deeper insights into the complicated dynamics underlying epileptic seizures. (C) 2008 American Institute of Physics.
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