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生物组织磁刺激技术是一种无创伤生物刺激技术,在脑神经刺激以及深部神经刺激中较之传统电刺激具有明显优势,近10几年来发展较迅速。本文概述了磁刺激技术的基本原理,介绍了脑部磁刺激常用的球形头模型和计算颅内感应电场分布的数学模型,分析了线圈设计中不同的结构、形状、大小、方向等对感应电场聚焦性的影响,比较了圆形(包括圆形的变形)线圈、八字形线圈、Slinky线圈刺激脑部神经的基本特性,此外还简单描述了刺激线圈的内部参数。
Biological tissue magnetic stimulation technology is a noninvasive biological stimulation technology, which has obvious advantages over traditional electrical stimulation in cranial nerve stimulation and deep nerve stimulation, and has developed rapidly in the past 10 years. This paper summarizes the basic principle of magnetic stimulation technology, introduces the spherical head model commonly used in magnetic stimulation of the brain and mathematical model for calculating the distribution of electric field in the brain. The effects of different structures, shapes, sizes and directions on the induced electric field Focusing on the effects of circular (including circular deformation) coil, eight-shaped coil, Slinky coil to stimulate the basic characteristics of the brain, in addition to a brief description of the internal parameters of the stimulation coil.