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Modelling the role of tissue heterogeneity in epileptic rhythms

Goodfellow, M; Taylor, PN; Wang, Y; Garry, DJ; Baier, G; (2012) Modelling the role of tissue heterogeneity in epileptic rhythms. European Journal of Neuroscience , 36 (2) pp. 2178-2187. 10.1111/j.1460-9568.2012.08093.x.

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Abstract

Epileptic seizure activity manifests as complex spatio-temporal dynamics on the clinically relevant macroscopic scale. These dynamics are known to arise from spatially heterogeneous tissue, but the relationship between specific spatial abnormalities and epileptic rhythm generation is not well understood. We formulate a simplified macroscopic modelling framework with which to study the role of spatial heterogeneity in the generation of epileptiform spatio-temporal rhythms. We characterize the overall model dynamics in terms of spontaneous activity and excitability and demonstrate normal and abnormal spreading of activity. We introduce a means to systematically investigate the topology of abnormal sub-networks and explore its impact on spontaneous and stimulus-evoked rhythmic dynamics. This computationally efficient framework complements results from detailed biophysical models, and allows the testing of specific hypotheses about epileptic dynamics on the macroscopic scale.

Type: Article
Title: Modelling the role of tissue heterogeneity in epileptic rhythms
DOI: 10.1111/j.1460-9568.2012.08093.x
Publisher version: http://dx.doi.org/10.1111/j.1460-9568.2012.08093.x
Language: English
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: http://discovery.ucl.ac.uk/id/eprint/1517875
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