影响感应电场分布的线圈设计因素分析

摘要

In this paper, influences of coil geometry and related factors on distribution of induced electric fields during magnetic stimulation were analyzed theoretically, which includes the shape and the diameter of the coil, the ratio between diameter and stimulation depth, the gap between two coils and current direction. The different changes of induced electric field brought about by changing of these factors were calculated. The result showed the effect of localization was good, when the diameter of the coil was 2 to 4 times of the depth of stimulation.%本文理论上分析了影响头部磁刺激感应电场分布的各种因素，包括刺激线圈的形状、线圈的直径、直径与刺激深度比的影响以及线圈间距和通过线圈电流方向的影响等。分别计算了这些因素的变化引起的感应电场的变化情况，结果表明当直径为刺激深度的2～4倍时磁刺激的定位性能较好。