Title :
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
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 dEx /dx (considered the activating function in neural stimulation). The values of dEx/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 dEx /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;
Conference_Titel :
Bioengineering Conference, 1997., Proceedings of the IEEE 1997 23rd Northeast
Conference_Location :
Durham, NH
Print_ISBN :
0-7803-3848-0
DOI :
10.1109/NEBC.1997.594948
