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Stages de découverte (classe de 3eme, 2nde) Voir https://www.math.univ-paris-diderot.fr/diffusion/index

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189 personnes travaillent au LJLL

90 permanents

82 chercheurs et enseignants-chercheurs permanents

8 ingénieurs, techniciens et personnels administratifs

99 personnels non permanents

73 doctorants

14 post-doc et ATER

12 émérites et collaborateurs bénévoles

 

Chiffres mars 2019

 

Activité électrique du coeur


Our interest in cardiac electrical activity has led us to model the heart as follows : first a reconstruction of the geometry is performed (restricted here to two ventricules) and a 3D mesh is then constructed ; then the electrical signal propagation is described by Aliev-Panfilov 2-variables set of equations which are discretized by a finite element method.

The chosen model is able to reproduce an action potential quite accurately, qualitatively close to the physiological one.

The simulation presented here (Medit) shows a signal initiated at the level of the sinusal node, propagating faster along its bundle (bundle of Hiss), and reaching rapidly both of the cardiac chambers.

A. Franchitti & Y. Maday


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