PMID: 8474260Feb 1, 1993Paper

Correction for the influence of background muscle activity on stretch reflex amplitudes

Journal of Neuroscience Methods
B R BloemR A Roos

Abstract

Background muscle activity (BGR) exerts a strong influence on stretch reflex amplitudes. While it is considered important to correct for this influence, which method best able to eliminate the effects of BGR remains unknown. We have therefore compared one previously described and one novel correction method which respectively consisted of calculating (1) the difference between reflex amplitude and BGR, and (2) the ratio of reflex amplitude to BGR. These correction methods were evaluated in a group of 23 healthy individuals. BGR and stretch reflexes were recorded from the gastrocnemius muscle of standing subjects who received sudden toe-up perturbations of a supporting platform upon which they were standing. Calculation of differences markedly reduced the influence of BGR on stretch reflex amplitudes in most, although not all, subjects. Calculation of ratios failed to correct for BGR in most subjects and caused a net increase in the influence of BGR on stretch reflex amplitudes. Because both correction methods insufficiently corrected for BGR in normal subjects, we introduce the use of analysis of covariance (ANCOVA) to reliably remove the influence of BGR on stretch reflex amplitudes. The use of ANCOVA is exemplified by showing...Continue Reading

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Citations

Sep 1, 1995·Movement Disorders : Official Journal of the Movement Disorder Society·B R BloemR A Roos
Sep 1, 1996·Movement Disorders : Official Journal of the Movement Disorder Society·B R BloemR A Roos
Nov 25, 2005·Experimental Brain Research·P H J A NieuwenhuijzenJ Duysens
Apr 1, 1995·Journal of the Neurological Sciences·B R BloemJ G van Dijk
May 1, 1994·Journal of the Neurological Sciences·B R BloemR A Roos
Oct 1, 1995·Journal of the Neurological Sciences·D J BeckleyB R Bloem
Dec 14, 2001·Journal of Neuroscience Methods·D A C M CommissarisB R Bloem
Sep 26, 2000·Electroencephalography and Clinical Neurophysiology·B R BloemR A Roos
Jan 1, 1995·Acta Neurologica Scandinavica·B R BloemR A Roos
Nov 12, 2009·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Craig D TokunoMark G Carpenter
Sep 16, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Jasper E VisserBastiaan R Bloem
Oct 8, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·M BakkerB R Bloem
Mar 7, 2008·Parkinsonism & Related Disorders·Eyal WeissbluethShraga Hocherman
Feb 1, 2008·Muscle & Nerve·Satoshi KuwabaraUNKNOWN Tokyo Metropolitan Neuromuscular Electrodiagnosis Study Group
Jun 26, 2004·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Chul Gyu SongNam Gyun Kim
Aug 6, 2004·Journal of Neurophysiology·M G CarpenterJ H J Allum
Mar 10, 2007·Journal of Applied Physiology·Jean-Francois GrossetChantal Pérot
Aug 29, 2003·Journal of Neurophysiology·Diana DimitrovaJohn G Nutt
Aug 2, 2018·Frontiers in Neurology·Esther M J BekkersAlice Nieuwboer

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