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Brain Dynamics and Modeling in Epilepsy: Prediction and Control Studies

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Complex Dynamics in Physiological Systems: From Heart to Brain

Part of the book series: Understanding Complex Systems ((UCS))

Abstract

Epilepsy is a major neurological disorder characterized by intermittent paroxysmal neuronal electrical activity, that may remain localized or spread, and severely disrupt the brain’s normal operation. Epileptic seizures are typical manifestations of such pathology. It is in the last 20 years that prediction and control of epileptic seizures has been the subject of intensive interdisciplinary research. In this communication, we investigate epilepsy from the point of view of pathology of the dynamics of the electrical activity of the brain. In this framework, we revisit two critical aspects of the dynamics of epileptic seizures – the seizure predictability and seizure resetting – that may prove to be the keys for improved seizure prediction and seizure control schemes. We use human EEG data and the concepts of spatial synchronization of chaos, phase and energy to first show that seizures could be predictable in the order of tens of minutes prior to their onset. We then present additional statistical evidence that the pathology of the brain dynamics prior to seizures is reset mostly upon seizures’ occurrence, a phenomenon we have called seizure resetting. Finally, using a biologically-plausible neural population mathematical model that can exhibit seizure-like behavior, we provide evidence for the effectiveness of a recently devised seizure control scheme we have called “feedback decoupling”. This scheme also provides an interesting dynamical model for ictogenesis (generation of seizures).

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Authors and Affiliations

  1. The Harrington Department of Bioengineering and Electrical Engineering, Arizona State University, Tempe, Arizona, USA

    Leonidas Iasemidis

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  1. Leonidas Iasemidis
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  2. Shivkumar Sabesan
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  3. Niranjan Chakravarthy
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  4. Awadhesh Prasad
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  5. Kostas Tsakalis
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Editors and Affiliations

  1. Central Instrumentation, Indian Institute of Chemical Biology, Kolkata-700032, India

    Syamal K. Dana (Dr.) (Dr.)

  2. Department of Physics, Presidency College, Kolkata-700073, India

    Prodyot K. Roy (Dr.) (Dr.)

  3. Institut für Physik, Universität Potsdam, Am Neuen Palais 10, 14415, Potsdam, Germany

    Jürgen Kurths (Dr.) (Dr.)

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Iasemidis, L., Sabesan, S., Chakravarthy, N., Prasad, A., Tsakalis, K. (2009). Brain Dynamics and Modeling in Epilepsy: Prediction and Control Studies. In: Dana, S.K., Roy, P.K., Kurths, J. (eds) Complex Dynamics in Physiological Systems: From Heart to Brain. Understanding Complex Systems. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9143-8_12

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