Onset of polyspike complexes in a mean-field model of human electroencephalography and its application to absence epilepsy

Author:

Marten Frank1,Rodrigues Serafim1,Benjamin Oscar1,Richardson Mark P2,Terry John R1

Affiliation:

1. Department of Engineering Mathematics, University of BristolBristol BS8 1TR, UK

2. Institute of Psychiatry, King's College LondonCamberwell, London SE5 8AF, UK

Abstract

In this paper, we introduce a modification of a mean-field model used to describe the brain's electrical activity as recorded via electroencephalography (EEG). The focus of the present study is to understand the mechanisms giving rise to the dynamics observed during absence epilepsy, one of the classical generalized syndromes. A systematic study of the data from a number of different subjects with absence epilepsy demonstrates a wide variety of dynamical phenomena in the recorded EEG. In addition to the classical spike and wave activity, there may be polyspike and wave, wave spike or even no discernible spike–wave onset during seizure events. The model we introduce is able to capture all of these different phenomena and we describe the bifurcations giving rise to these different types of seizure activity. We argue that such a model may provide a useful clinical tool for classifying different subclasses of absence epilepsy.

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

Reference26 articles.

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