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Current Directions in Biomedical Engineering

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Buzug, Thorsten M. / Haueisen, Jens / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Kraft, Marc / Lenarz, Thomas / Leonhardt, Steffen / Malberg, Hagen / Penzel, Thomas / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Urban, Gerald A.

Open Access
Online
ISSN
2364-5504
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A New Method of Measuring Stimulation Threshold

Werner Irnich
Published Online: 2018-09-22 | DOI: https://doi.org/10.1515/cdbme-2018-0070

Abstract

Louis Lapicque introduced the hyperbolic stimulation law with the key parameters “rheobase” and “chronaxie” that were obtained with rectangular current pulses. With rectangular pulses rheobase cannot be measured. It was found recently that hyperbolic stimulation rules are also valid for non-rectangular pulses and that their rheobase or chronaxie values are identical with that of their rectangular counterparts. Threshold measuring with exponential pulses allow for determining rheobase directly and chronaxie by calculation with only two measurements. The measuring procedure is described in detail.

Keywords: electrostimulation; threshold measurement; rheobase; chronaxie; exponential pulse; effective pulse duration

About the article

Published Online: 2018-09-22

Published in Print: 2018-09-01


Citation Information: Current Directions in Biomedical Engineering, Volume 4, Issue 1, Pages 287–289, ISSN (Online) 2364-5504, DOI: https://doi.org/10.1515/cdbme-2018-0070.

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