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Electric Field Distribution around the Deep Brain Stimulation Electrode Inferred from Dielectric Measurements

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Abstract:

Information about the spatial distribution of the electric field can be obtained by measuring the electrode impedance as a function of the diameter of the electrolyte surrounding the electrode. The non-uniform distribution of the electric field around the electrode is supported by the variation of the geometry factor (GF) with the electrical conductivity and geometry of the volume conductor. A comparison of the values obtained for the GF from experimental data, from model calculations and simulations help to understand the non-uniform distribution of the electric field. The GF calculated from four-electrode-measurements is significantly higher. GF should be used with caution in calculations of the deep brain stimulation (DBS) electrode impedance.

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Advanced Materials Forum VI View Preview

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Periodical:

Materials Science Forum (Volumes 730-732)

Pages:

26-31

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.26

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Online since:

November 2012

Authors:

Bogdan Neagu, Eugen R. Neagu, Rui Igreja, C.J. Dias

Keywords:

Deep Brain Stimulation, Dielectric Measurements, Electric Field Distribution

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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