3D Modeling of Magnetic Stimulation of Cochlear Nerve

Abstract

This paper presents 3D modeling of outer magnetic stimulation of cochlear nerve in a realistic human head model. Transient Finite element method (FEM) modeling has been used. The FEM model represents an anatomically precise geometrical model of human head with known tissue electrical properties. The induced voltages and flux densities in the cochlear nerve are determined depending on the stimulation coil relative distance, spatial position to the head and electric current. Shielding effect due to tissue electrical conductivity is estimated and visualized. These data will be used for advanced stimulation coil design and adaptive positioning methodology, with possible application for direct human-to-machine interface.