The coactivation of antagonist muscles

Canadian Journal of Physiology and Pharmacology
A M Smith

Abstract

Since Sherrington's convincing demonstration of the reciprocal innervation of opposing muscles, it has generally been thought that antagonist muscles are inactive during most voluntary movements. However, more recent evidence suggests that excitation of Renshaw cells may facilitate antagonist coactivation whereas excitation of Ia inhibitory neurons can induce reciprocal inhibition. A body of evidence has accumulated to indicate some of the circumstances which particularly favour the co-contraction of antagonist muscles. Isometric prehension, either in the precision grip or the power grip, can be shown to be one of the most important examples of antagonist coactivation. Studies of the discharge of single Purkinje cells of the intermediate cerebellar cortex in awake monkeys during performance of a maintained grip revealed that the majority of these neurons are deactivated during antagonist co-contraction. In contrast, other, unidentified neurons of the cerebellar cortex were as a group activated during grasping. It is suggested that the Purkinje cells act to inhibit antagonist muscles during reciprocal inhibition but are themselves inhibited during antagonist coactivation. These results support a suggestion made by Tilney and Pik...Continue Reading

Citations

Sep 2, 1998·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·M M CowanG R Colborne
Sep 1, 1983·Pflügers Archiv : European journal of physiology·C Fromm
Apr 19, 2008·Experimental Brain Research·Wolfgang TaubeAlbert Gollhofer
Apr 2, 2010·Experimental Brain Research·Thorsten RudroffRoger M Enoka
Sep 30, 2010·Experimental Brain Research·Gwyn N LewisEric J Perreault
Apr 22, 2005·European Journal of Applied Physiology·Ig AmiridisV Hatzitaki
Jan 5, 2011·The Cerebellum·Timothy J EbnerLaurentiu S Popa
Jul 1, 1995·Journal of Biomechanics·R E HughesD B Chaffin
Jun 1, 1994·Electroencephalography and Clinical Neurophysiology·M SuzukiK Matsunami
Jan 11, 1988·Neuroscience Letters·P BurbaudB Bioulac
Aug 23, 1996·Neuroscience Letters·R ChanD I McCloskey
Apr 1, 1996·Electroencephalography and Clinical Neurophysiology·G I BoormanU R Windhorst
Dec 1, 1995·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·S E MathiassenG M Hägg
Feb 20, 1999·Neuroscience Letters·S KrafczykT Brandt
Feb 11, 2003·Brain Research Bulletin·Yoshihiko YamazakiHiroshi Itoh
Apr 23, 2003·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·E KellisC Papadopoulos
Mar 31, 1999·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·M Narici
Mar 4, 2000·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·T Hortobágyi, P DeVita
Mar 1, 1995·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·S A Lavender, W S Marras
Jul 31, 2008·Journal of Speech, Language, and Hearing Research : JSLHR·Roger W SteeveJacki Ruark McMurtrey
Dec 1, 1994·Acta Physiologica Scandinavica·C Crone, J Nielsen
Dec 31, 1997·American Journal of Respiratory and Critical Care Medicine·G E TzelepisC Roussos
Jul 2, 2009·Medicine and Science in Sports and Exercise·Chandramouli Krishnan, Glenn N Williams
Nov 27, 2001·The Journal of Orthopaedic and Sports Physical Therapy·D G Lloyd
Nov 6, 2012·Biological cybernetics·Neville Hogan, Dagmar Sternad
May 5, 1999·The Journal of Physiology·J Wessberg, N Kakuda
Sep 5, 2001·The Journal of Physiology·P JohannsenJ B Nielsen
Jun 1, 1995·Progress in Neurobiology·M K Horne, E G Butler
May 4, 2011·Neuroscience Research·Michelle MarneweckGeoff Hammond
Jan 2, 2007·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Jean François GrossetChantal Pérot

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