电磁场的医学应用:对圆柱形组织内的神经纤维的磁刺激

2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI:10.1109/OPTIM.2008.4602348

M. Pleşa, L. Darabant, R. Ciupa, A. Darabant

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引用次数: 3

摘要

提出了一个模型，预测了磁场刺激周围神经时在手臂上产生的电场。臂被表示为均匀的圆柱形体积导体。电场的产生有两个来源:时变磁场和组织空气表面电荷的积累。在磁刺激中，这两种作用都是显著的。无源电缆模型描述了神经纤维对这种感应电场的反应。一旦线圈的位置、方向和形状给定，并指定了刺激电路的电阻、电容和初始电压，就可以计算出光纤的跨膜电位作为距离和时间的函数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A medical application of electromagnetic fields: The magnetic stimulation of nerve fibers inside a cylindrical tissue

A model is presented that predicts the electric field induced in the arm during magnetic stimulation of a peripheral nerve. The arm is represented as a homogeneous, cylindrical volume conductor. The electric field arises from two sources: the time - varying magnetic field and the accumulation of charge on the tissue - air surface. In magnetic stimulation both of these contributions are significant. A passive cable model describes the response of the nerve fiber to this induced electric field. Once the coil's position, orientation and shape are given, and the resistance, capacitance and the initial voltage of the stimulating circuit are specified, the resulting transmembrane potential of the fiber is calculated as a function of distance and time.

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2008 11th International Conference on Optimization of Electrical and Electronic Equipment

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