title: Correlation-dimension and autocorrelation fluctuations in epileptic seizure dynamics.
abstract: We focus on an anomalous scaling region in correlation integral [C(epsilon)] analysis of electrocorticogram in epilepsy patients. We find that epileptic seizures typically are accompanied by wide fluctuations in the slope of this scaling region. An explanation, based on analyzing the interplay between the autocorrelation and C(epsilon), is provided for these fluctuations. This anomalous slope appears to be a sensitive measure for tracking (but not predicting) seizures.
authors.affiliation: Department of Mathematics, Center for Systems Science and Engineering Research, Arizona State University, Tempe, Arizona 85287, USA.
authors.forename: Ying-Cheng
authors.initials: YC
authors.lastname: Lai
authors.forename: Ivan
authors.initials: I
authors.lastname: Osorio
authors.forename: Mary Ann F
authors.initials: MA
authors.lastname: Harrison
authors.forename: Mark G
authors.initials: MG
authors.lastname: Frei
mesh_terms: D004569:Electroencephalography / Q000379:methods*; D004827:Epilepsy / Q000503:physiopathology*; D006801:Humans; D007700:Kinetics; D012640:Seizures / Q000175:diagnosis*; D013223:Statistics as Topic / Q000379:methods*; D013997:Time Factors