Reflex effects of muscle afferents on antagonist studied on single firing motor units in man

Electroencephalography and Clinical Neurophysiology
L P Kudina

Abstract

The effects of electrical stimulation of mixed nerves and of the evoked tendon reflex on single firing MUs of antagonists were investigated. The following muscles were studied: m. biceps fem., m. tibialis ant. and m. triceps surae. Under a weak voluntary contraction MU potentials were picked up. Post-stimulus histograms of MU potentials were plotted and the duration of interspike intervals in the post-stimulus period was compared with that in the prestimulus period. Under electrical stimulation of the nerve (Ia afferents) a distinct reciprocal inhibition was observed on MUs of all the 3 investigated muscles. In some cases a weak excitatory drive could be revealed along with the reciprocal inhibition. The tendon (knee) reflex was accompanied by a distinct excitatory effect on MUs of the antagonist. The dependence between the efficiency of the inhibitory volley and the moment within an interspike interval at which the volley arrived was found. The lengthening of an interval was observed only when an inhibitory drive occurred close to its end. The peculiarities of reciprocal inhibition in the firing motoneurone, as well as the possible mechanism of the excitatory effect on the antagonist accompanying the tendon reflex, are discussed.

References

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Citations

Jan 1, 1982·Experimental Brain Research·G L GottliebG C Agarwal
Dec 27, 2011·Experimental Brain Research·Maria Piotrkiewicz, Lydia Kudina
Sep 21, 2004·Biological cybernetics·Maria PiotrkiewiczJolanta Mierzejewska
Feb 1, 1988·Electroencephalography and Clinical Neurophysiology·L P Kudina, R E Pantseva
Oct 1, 1992·Electroencephalography and Clinical Neurophysiology·L P Kudina, N L Alexeeva
Jun 1, 1996·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·J S Halle, C G Kukulka
Mar 20, 1999·Journal of Physiology, Paris·L P Kudina
Apr 30, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Randall K Powers, Kemal S Türker
May 1, 1988·Experimental Neurology·R S HuttonV R Edgerton
Jan 1, 1996·The Australian Journal of Physiotherapy·Toby Hall, John Quintner
Jul 5, 2002·Critical Reviews in Oral Biology and Medicine : an Official Publication of the American Association of Oral Biologists·Kemal S Türker
Feb 28, 2006·Experimental Brain Research·Hadrien CeyteAlain Roux
Sep 24, 2010·Journal of Neurophysiology·Christopher W MacDonellS Jayne Garland
Dec 4, 2001·Journal of Neurophysiology·K S Türker, R K Powers
Feb 1, 2018·Journal of Neurophysiology·Utku Ş YavuzDario Farina
Dec 5, 2019·PloS One·Mustafa Görkem ÖzyurtKemal Sitki Türker

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