Spacing analysis of a focal magnetic stimulating coil

Author

Sommers, Joel D. ; Gaumond, Roger P.

Author_Institution

Bioeng. Program, Pennsylvania State Univ., University Park, PA, USA

fYear

1997

fDate

21-22 May 1997

Firstpage

42

Lastpage

43

Abstract

A promising coil geometry for focal stimulation of neurons through magnetic induction is the quad-square coil. This configuration utilizes four 90° corners at the center to produce large values of dE_x/dx (considered the activating function in neural stimulation). The values of dE_x/dx produced by the center of the coil are limited by the coil dimensions and coil spacing. A closed form solution of the limiting function in terms of coil dimension, spacing, and stimulating depth is presented and the relationship between dE_x/dx and spacing is graphically shown

Keywords

biological effects of fields; biological techniques; biomagnetism; biomedical equipment; coils; electromagnetic induction; focusing; neurophysiology; activating function; closed form solution; coil dimensions; coil geometry; coil spacing; focal magnetic stimulating coil; focal stimulation; limiting function; magnetic induction; neural stimulation; neurons; quad-square coil; spacing analysis; stimulating depth; Biomedical engineering; Closed-form solution; Coils; Geometry; Magnetic analysis; Magnetic separation; Nerve fibers; Neurons; Permeability; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1997., Proceedings of the IEEE 1997 23rd Northeast

Conference_Location

Durham, NH

Print_ISBN

0-7803-3848-0

Type

conf

DOI

10.1109/NEBC.1997.594948

Filename

594948