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Conference papers

Computation of the electrical potential inside the nerve induced by an electrical stimulus

Sabir Jacquir 1 Joan Fruitet 1 David Guiraud 1, * Maureen Clerc 2
* Corresponding author
1 DEMAR - Artificial movement and gait restoration
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, CRISAM - Inria Sophia Antipolis - Méditerranée
2 ODYSSEE - Computer and biological vision
DI-ENS - Département d'informatique de l'École normale supérieure, CRISAM - Inria Sophia Antipolis - Méditerranée , ENS Paris - École normale supérieure - Paris, Inria Paris-Rocquencourt, ENPC - École des Ponts ParisTech
Abstract : The aim is to investigate the activation conditions of the different nerves which control the bladder. The selective stimulation of the nerve fibers depends on electrode configuration and intensity of applied current. The goal of this study is to compute the electrical potential inside the nerve due to an applied boundary currents. A symmetrically cylindrical model, representing the geometry and electrical conductivity of a nerve surrounded by a connective tissue and a cuff is used. In the quasistatic approximation, the problem can be modeled by a Poisson equation with Neumann boundary conditions. A symmetric boundary integral formulation is discretized using mixed finite elements. We can thus compute an electrical potential distribution depending on the electrode configuration and the applied current inside a nerve. Our results show that the distribution of the electrical potential inside a nerve or a fascicle depends on the geometry of the electrode and the shape of the applied current.
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Submitted on : Thursday, March 12, 2009 - 5:13:35 PM
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Sabir Jacquir, Joan Fruitet, David Guiraud, Maureen Clerc. Computation of the electrical potential inside the nerve induced by an electrical stimulus. EMBC: Engineering in Medicine and Biology Conference, Aug 2007, Lyon, France. pp.1711-1714, ⟨10.1109/IEMBS.2007.4352639⟩. ⟨lirmm-00367904⟩



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