The Field from an Isolated Nerve in a Volume Conductor
Document Type
Article
Publication Date
1-1-1977
Department
Electrical Engineering
Abstract
Experimental recordings of electric field potentials from an active frog sciatic nerve in an “infinite” volume conductor were obtained. The dorsal and ventral roots supplying the isolated sciatic nerve were dissected and stimulated separately and in combination. The measured electric field potentials from dorsal/ventral root stimulation, as well as whole nerve stimulation, were recorded at the nerve surface and at several radii from the nerve. The field potentials, at these radius values, were predicted from a solution of Laplace's equation. The Fourier transform development of the solution of Laplace's equation, as presented by Clark and Plonsey [4], [5], allowed the determination of the field potentials to be viewed as a one-dimensional linear filtering procedure with the surface potential as an input and the field potential at a given radius as an output. Standard techniques in linear system theory were utilized to perform convolution via the discrete Fourier transform (DFT) and to perform inverse filtering via optimal filtering methods. With these techniques the surface potential could be predicted given a field potential measurement at a known radial distance from the nerve. © 1977, IEEE. All rights reserved.
DOI
10.1109/TBME.1977.326203
First Page
18
Last Page
23
Publication Title
IEEE Transactions on Biomedical Engineering
Recommended Citation
Greco, E. C. & Clark, J. W. (1977). The field from an isolated nerve in a volume conductor. IEEE Transactions on Biomedical Engineering BME-24(1): 18-23. doi: 10.1109/TBME.1977.326203
Comments
At the time of publication, Edward Carl Greco was affiliated with [NAME of UNIV].