PMID: 7370734Apr 14, 1980Paper

Main characteristics of the hindlimb locomotor cycle in the decorticate cat with special reference to bifunctional muscles

Brain Research
C Perret, J M Cabelguen

Abstract

In acute decorticate (thalamic) cats, efferent activities to various hindlimb muscles during the locomotor cycle were studied, using several complementary methods: muscle and motor nerve recordings, monosynaptic testing, intracellular recording from motoneurones, recording of fusimotor actions on single Ia afferents. The limb was fixed and peripheral influences could be either increased by exteroceptive stimulations or decreased by curarization and/or deafferentation. Our main results were the following: in all studied muscles, there is an alpha-gamma coactivation; there are pure flexor and pure extensor muscles with simple alternating activities; bifunctional pluriarticular muscles show complex activations which allow the division of the locomotor cycle into a flexion, an extension and two transition phases; alpha motoneurones of these muscles receive both flexor and extensor commands; the relative importance of the corresponding excitations depends on interactions between these central commands and peripheral inflow, especially through afferents acting according to the flexor reflex pattern. Based on these results, an attempt is made to explain how the complex and variable efferent activity can arise from an initially simple ...Continue Reading

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Citations

Nov 23, 2006·Biological cybernetics·Alain Frigon, Serge Rossignol
Apr 1, 1988·Behavioural Brain Research·Y I ArshavskyC Perret
Feb 1, 1990·Neuroscience Research·E D Schomburg
Jan 1, 1992·Neuroscience·G J van Ingen SchenauW W van Woensel
Dec 1, 1994·Current Opinion in Neurobiology·S Rossignol, R Dubuc
Apr 6, 2002·Journal of Biomechanics·J DuysensF C T Van der Helm
Apr 14, 1999·Gait & Posture·J Duysens, Van de Crommert HW
Jul 31, 2003·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·V Dietz
Dec 1, 1992·The Behavioral and Brain Sciences·J F Stein
Jun 27, 2013·Proceedings of the National Academy of Sciences of the United States of America·Martin HägglundOle Kiehn
Feb 1, 1984·Proceedings of the National Academy of Sciences of the United States of America·J N SanesA Chu
Jan 1, 1990·The European Journal of Neuroscience·W. GödderzT. Yamaguchi
Oct 1, 1992·The European Journal of Neuroscience·I. GoudardJ.-M. Cabelguen
Feb 3, 1999·Annals of the New York Academy of Sciences·D P BashorL M Jordan
Feb 3, 1999·Annals of the New York Academy of Sciences·T V TrankT M Hamm
Feb 3, 1999·Annals of the New York Academy of Sciences·J L SmithT V Trank
Mar 24, 2012·Journal of Neurophysiology·Jason DyckSimon Gosgnach
Mar 15, 2016·Frontiers in Human Neuroscience·Julie StangErnst Albin Hansen
Feb 22, 2012·Progress in Neurobiology·Philippe MorquetteArlette Kolta
Sep 2, 2009·Brain Research Reviews·Pierre A Guertin
Mar 28, 2009·Journal of Neuroscience Research·Pierre A Guertin, Inge Steuer
Nov 23, 2011·The Journal of Physiology·C F MeehanH Hultborn
Oct 16, 2015·Journal of Motor Behavior·Mahta SardroodianErnst Albin Hansen

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