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Modeling of magnetic field stimulation of bent neurons

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2 Author(s)
Abdeen, M.A. ; Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada ; Stuchly, M.A.

The authors consider a simple model of magnetic stimulation of a long bent neuron located in a semi-infinite volume conductor with a planar interface. It is shown that the stimulating coil characteristics (size, shape and location) and the neuron shape affect the location of the stimulation. The activating function, defined as the electric field derivative along the neuron, has two components. One component depends on the derivative of the electric field along the straight section of the neuron, and the other on the field magnitude. The maximal stimulation point is at the bent part of the nerve and its position depends on the nerve shape and coil parameters. The analysis also has shown a better performance (a stronger stimulus) for a double-circular (figure eight) coil than for a double-square coil.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:41 ,  Issue: 11 )

Date of Publication:

Nov. 1994

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