A medical application of electromagnetic fields: The magnetic stimulation of nerve fibers inside a cylindrical tissue

Author

Plesa, M. ; Darabant, L. ; Ciupa, R. ; Darabant, A.

Author_Institution

Electrotechnics Dept., Tech. Univ. of Cluj-Napoca, Cluj-Napoca

fYear

2008

fDate

22-24 May 2008

Firstpage

87

Lastpage

93

Abstract

A 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 tissue - air surface. In magnetic stimulation both of these contributions are significant. A passive cable model describes the response of the nerve fiber to this induced electric field. Once the coil´s position, orientation and shape are given, and the resistance, capacitance and the initial voltage of the stimulating circuit are specified, the resulting transmembrane potential of the fiber is calculated as a function of distance and time.

Keywords

bioelectric potentials; biological tissues; biomagnetism; neurophysiology; patient treatment; cylindrical tissue; cylindrical volume conductor; electromagnetic field application; handicaps; homogeneous conductor; magnetic stimulation; medical application; nerve fibers; passive cable model; peripheral nerve; transmembrane potential; Biomedical equipment; Conductors; Electromagnetic fields; Magnetic fields; Magnetic stimulation; Medical services; Nerve fibers; Predictive models; Shape; Surface resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Optimization of Electrical and Electronic Equipment, 2008. OPTIM 2008. 11th International Conference on

Conference_Location

Brasov

Print_ISBN

978-1-4244-1544-1

Electronic_ISBN

978-1-4244-1545-8

Type

conf

DOI

10.1109/OPTIM.2008.4602348

Filename

4602348