A MODIFYING CABLE FUNCTION FOR REPRESENTING THE EXCITATION OF PERIPHERAL NERVES BY TRANSVERSE FIELD
可描述横向电场中外周神经兴奋的电缆方程

The classical cable equation has been only used to represent the response of peripheral nerve to external electrical field in the direction of the nerve, and can not describe the excitation of peripheral nerve to the transverse field induced by pulse magnetic field. In this paper, a modified cable equation is obtained to represent the response of peripheral nerve to a transverse field. The simulation results demonstrate that the excitation results from net inward current along radial direction. It is in agreement with the empirical results of Struijk of the magnetic stimulation of myelinated nerve in vitro. This modified cable equation can be used to represent the response of peripheral nerve to arbitrary electric field and to improve the stimulation coil in magnetic stimulation.