A theoretical calculation of the electric field induced by magnetic stimulation of a peripheral nerve.

Abstract:

:A mathematical 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 arm surface. In magnetic stimulation both of these contributions are significant. The magnitude of the electric field is greatest near the surface of the arm, and is well localized. Various coil orientations are examined; the smallest electric fields are induced when the coil is perpendicular to the arm surface, the largest when the coil is parallel. These results are consistent with many experimental observations in the literature, and aid in the basic understanding of magnetic stimulation of the peripheral nervous system.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Roth BJ,Cohen LG,Hallett M,Friauf W,Basser PJ

doi

10.1002/mus.880130812

subject

Has Abstract

pub_date

1990-08-01 00:00:00

pages

734-41

issue

8

eissn

0148-639X

issn

1097-4598

journal_volume

13

pub_type

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