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Statistics of the myoelectric signal from monopolar and bipolar electrodes

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Abstract

With the aid of some simplifying assumptions, a model is proposed that describes certain statistics of the myoelectric signal detected with a bipolar electrode. It is shown that these statistics are determined by the statistics of the monopolar signal and the spacing of the bipolar electrode pair. In particular, the dependence of the bipolar-signal bandwidth on electrode spacing is derived. The experimental results agree reasonably well with those predicted by the model.

Sommaire

Grâce à quelques hypothèses simplificatrices, nous proposons un modèle qui décrit certaines statistiques du signal myoélectrique, détecté à l'aide d'une électrode bipolaire. Nous démontrons que ces statistiques sont déterminées par les statistiques du signal monopolaire et l'intervalle entre la paire d'électrodes bipolaires. Nous dérivons en particulier la dépendance de la longueur d'onde du signal bipolaire sur la distance entre les électrodes. Les résultats expérimentaux sont en assez bon accord avec les résultats fournis par le modèle.

Zusammenfassung

Mit Hilfe einiger vereinfachender Annahmen wird ein Modell vorgeschlagen, welches gewisse Verteilungen des mit einer bipolaren Elektrode gemessenen myoelektrischen Signals beschreibt. Es wird gezeigt, dass diese Verteilungen durch die Verteilung des monopolaren Signals und den Abstand des bipolaren Elektrodenpaars bestimmt sind. Es wird insbesondere die Abhängigkeit der Bandbreite des bipolaren Signals vom Elektrodenabstand abgeleitet. Die experimentellen Ergebnisse stimmen verhältnismässig gut mit den vom Modell vorhergesagten überein.

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Parker, P.A., Scott, R.N. Statistics of the myoelectric signal from monopolar and bipolar electrodes. Med. & biol. Engng. 11, 591–596 (1973). https://doi.org/10.1007/BF02477404

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  • DOI: https://doi.org/10.1007/BF02477404

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