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Seizure warning algorithm based on optimization and nonlinear dynamics

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Abstract.

There is growing evidence that temporal lobe seizures are preceded by a preictal transition, characterized by a gradual dynamical change from asymptomatic interictal state to seizure. We herein report the first prospective analysis of the online automated algorithm for detecting the preictal transition in ongoing EEG signals. Such, the algorithm constitutes a seizure warning system. The algorithm estimates STL max , a measure of the order or disorder of the signal, of EEG signals recorded from individual electrode sites. The optimization techniques were employed to select critical brain electrode sites that exhibit the preictal transition for the warning of epileptic seizures. Specifically, a quadratically constrained quadratic 0-1 programming problem is formulated to identify critical electrode sites. The automated seizure warning algorithm was tested in continuous, long-term EEG recordings obtained from 5 patients with temporal lobe epilepsy. For individual patient, we use the first half of seizures to train the parameter settings, which is evaluated by ROC (Receiver Operating Characteristic) curve analysis. With the best parameter setting, the algorithm applied to all cases predicted an average of 91.7% of seizures with an average false prediction rate of 0.196 per hour. These results indicate that it may be possible to develop automated seizure warning devices for diagnostic and therapeutic purposes.

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Authors and Affiliations

  1. Departments of Industrial and Systems Engineering and Biomedical Engineering, University of Florida, USA

    Panos M. Pardalos

  2. Departments of Industrial and Systems Engineering and Neuroscience, University of Florida, USA

    Wanpracha Chaovalitwongse

  3. Departments of Biomedical Engineering and Electrical Engineering, Arizona State University, USA

    Leonidas D. Iasemidis

  4. Departments of Neuroscience, Neurology and Biomedical Engineering, University of Florida, USA

    J. Chris Sackellares

  5. Department of Neuroscience, University of Florida, USA

    Deng-Shan Shiau

  6. Departments of Pediatrics, Neuroscience, and Neurology, University of Florida, USA

    Paul R. Carney

  7. Department of Industrial and Systems Engineering, University of Florida, USA

    Oleg A. Prokopyev

  8. Department of Neuroscience, University of Florida, USA

    Vitaliy A. Yatsenko

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  1. Panos M. Pardalos
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  2. Wanpracha Chaovalitwongse
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  3. Leonidas D. Iasemidis
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  4. J. Chris Sackellares
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Mathematics Subject Classification (1991):20E28, 20G40, 20C20

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Pardalos, P., Wanpracha Chaovalitwongse, Iasemidis, L. et al. Seizure warning algorithm based on optimization and nonlinear dynamics. Math. Program., Ser. A 101, 365–385 (2004). https://doi.org/10.1007/s10107-004-0529-4

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