ARMA – Filtering of Evoked Potentials

H.-J. Heinze; H. Künkel

doi:10.1055/s-0038-1635318

Methods of Information in Medicine, Table of Contents

Methods Inf Med 1984; 23(01): 29-36
DOI: 10.1055/s-0038-1635318

Original Article

Schattauer GmbH

ARMA – Filtering of Evoked Potentials

ARMA – Filterung evozierter Potentiale

H.-J. Heinze

¹(From the Institute of Clinical Neurophysiology and Experimental Neurology [Director: Prof. Dr. med. H. Künkel] of the Medical School Hannover, Hannover, F. R. G.)

,

H. Künkel

¹(From the Institute of Clinical Neurophysiology and Experimental Neurology [Director: Prof. Dr. med. H. Künkel] of the Medical School Hannover, Hannover, F. R. G.)

› Author Affiliations

Abstract

Summary

A method of evoked potential data processing alternative to the averaging method will be discussed. It is to extract evoked potentials only from two segments. The theoretical basis of this procedure is the so-called ARMA model which gives a high frequency resolution of a periodic signal mixed with noise in a relatively low signal-to-noise ratio. The method is tested by simulation studies. The applicability will be demonstrated by clinical examples.

Eine Methode zur Erfassung evozierter Potentiale wird diskutiert, die im Gegensatz zum sog. Averaging eine Schätzung einzelner Potentiale aus zwei Segmenten gestattet. Grundlage des Verfahrens ist das sog. ARMA-Modell, das eine Frequenzanalyse hoher Genauigkeit eines periodischen Signals gestattet, das mit Rauschen in einem relativ niedrigen Signal – Rausch-Verhältnis additiv gemischt ist. Die Methode wird anhand von Simulationsbeispielen getestet. Ihre Anwendung wird mit klinischen Beispielen demonstriert.

Key-Words:

Evoked Potentials - ARMA Model - Stochastic Process - Selective Filtering

Schlüssel-Wörter:

Evozierte Potentiale - ARMA-Modell - stochastische Prozesse - selektive Filterung

Full Text

References

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