Virtual electrode polarization and current activation with monodomain equations

Yves Coudière 1, 2, * Myriam Rioux 1
* Auteur correspondant
1 CARMEN - Modélisation et calculs pour l'électrophysiologie cardiaque
IHU-LIRYC, IMB - Institut de Mathématiques de Bordeaux, Inria Bordeaux - Sud-Ouest
Abstract : The bidomain model is nowadays one of the most accurate mathematical descriptions of the electrical activity in the heart. From now on, it was believed to be the only model for accurate simulations of cardiac muscle stimulation in a clinically relevant manner, i.e. through extracellular electrodes. In this paper, we develop a computationally efficient and accurate approximation of the bidomain model that allows for extracellular stimulation and accounts for unequal anisotropy ratios between intra-and extra-cellular media: the current-lifted monodomain model. We prove its use in the isolated heart by reproducing four types of extracellular activation that exhibit virtual electrode polarization. The simplicity of the code implementation and the fact that the computational cost is equal to the standard monodomain model henceforth give an excellent alternative to the bidomain model for expensive simulations like arrhythmia, fibrillation, and their respective treatments, e.g. signal guided catheter ablation and defibrillation.
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Soumis le : vendredi 2 mai 2014 - 11:05:25
Dernière modification le : jeudi 11 janvier 2018 - 06:23:41
Document(s) archivé(s) le : samedi 2 août 2014 - 11:40:11


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  • HAL Id : hal-00986337, version 1



Yves Coudière, Myriam Rioux. Virtual electrode polarization and current activation with monodomain equations. 2014. 〈hal-00986337〉



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