基于三维容积导体模型得出的磁刺激激活函数。

The activating function for magnetic stimulation derived from a three-dimensional volume conductor model.

作者信息

Basser P J, Wijesinghe R S, Roth B J

机构信息

Biomedical Engineering and Instrumentation Program, National Institutes of Health, Bethesda, MD 20892.

出版信息

IEEE Trans Biomed Eng. 1992 Nov;39(11):1207-10. doi: 10.1109/10.168686.

DOI:10.1109/10.168686

PMID:1487283

Abstract

A three-dimensional volume conductor model of magnetic stimulation is proposed that relates transmembrane potential of an axon to the induced electric field in a uniform volume conductor. This model validates assumptions used to derive a one-dimensional cable model of magnetic stimulation (Roth & Basser, IEEE Trans. Biomed. Eng., vol. 37, pp. 588-597, 1990) of unmyelinated axons. The three-dimensional volume conductor model reduces to this one-dimensional cable equation forced by the activating function, -delta EzA/delta z.

摘要

提出了一种磁刺激的三维容积导体模型，该模型将轴突的跨膜电位与均匀容积导体中的感应电场联系起来。该模型验证了用于推导无髓鞘轴突磁刺激一维电缆模型（Roth和Basser，《IEEE生物医学工程汇刊》，第37卷，第588 - 597页，1990年）所使用的假设。三维容积导体模型简化为受激活函数 -δEzA/δz 驱动的一维电缆方程。