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Cylindrical tissue model for magnetic field stimulation of neurons: effects of coil geometry

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2 Author(s)
Esselle, K.P. ; Dept. of Electron., Macquarie Univ., North Ryde, NSW, Australia ; Stuchly, M.A.

An analytical solution for the electric field induced in a homogeneous cylindrical conductor under quasi-static conditions from current in a coil is used to model peripheral nerve stimulation with magnetic fields. A variety of coil geometries is analyzed in terms of the spatial derivative of the induced electric field along a long straight nerve, parallel to the axis, in a human-arm model. The results of these computations are found to be in general agreement with conclusions regarding the optimization of stimulating coils derived from analyses of the semi-infinite tissue model. The differences and their physical basis are pointed out.

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Biomedical Engineering, IEEE Transactions on  (Volume:42 ,  Issue: 9 )