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Experimental Brain Research

, Volume 24, Issue 5, pp 485–493 | Cite as

Heterogeneity of motor units activating single Golgi tendon organs in cat leg muscles

  • L. Jami
  • J. Petit
Article

Summary

The aim of this study was to investigate whether an individual Golgi tendon organ can signal the contraction of motor units with different physiological properties. The axonal conduction velocity and tetanic tension of motor units were examined in four muscles of the cat leg (peroneus brevis, peroneus longus, tibialis anterior and soleus). The motor units which were found to activate a given tendon organ had contractile properties dispersed over the same range as those of the whole muscle population. The proportion of tendon organ-activating motor units found in the studied samples suggests that altogether, the Golgi tendon organs of a muscle monitor the contraction of every motor unit in this muscle.

Key words

Tendon organs Ib Afferents Motor units Motor control 

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References

  1. Adrian, E.: The spread of activity in the tenuissimus muscle of the cat and in other complex muscles. J. Physiol. (Lond.) 60, 301–315 (1925)Google Scholar
  2. Al-Amood, W.S., Pope, R.: A comparison of the structural features of muscle fibres from a fast and slow-twitch muscle of the pelvic limb of the cat. J. Anat. (Lond.) 113, 49–60 (1972)Google Scholar
  3. Appelberg, B., Emonet-Dénand, F.: Motor units of the first superficial lumbrical muscle of the cat. J. Neurophysiol. 30, 154–160 (1967)Google Scholar
  4. Ariano, M.A., Armstrong, R.B., Edgerton, V.R.: Hind limb muscle fiber populations of five mammals. J. Histochem. Cytochem. 21, 51–55 (1973)Google Scholar
  5. Bagust, J.: Relationship between motor nerve conduction velocities and motor unit contraction characteristics in a slow-twitch muscle of the cat. J. Physiol. (Lond.) 238, 269–278 (1974)Google Scholar
  6. Barker, D.: The structure and distribution of muscle receptors. In: Symposium on Muscle Receptors. (Ed. D. Barker), pp. 227–240. Hong Kong: Hong Kong University Press 1962Google Scholar
  7. Barker, D.: The innervation of mammalian skeletal muscle. In: Ciba Foundation Symposium on Myotatic, Kinesthetic and Vestibular Mechanisms. (Eds. A.V.S. de Reuck, J. Knight), pp. 3–15. London: Churchill 1967Google Scholar
  8. Barker, D., Stacey, M.J., Adal, M.N.: Fusimotor innervation in the cat. Phil. Trans. B 258, 315–346 (1970)Google Scholar
  9. Bessou, P., Emonet-Dénand, F., Laporte, Y.: Relation entre la vitesse de conduction des fibres nerveuses motrices et le temps de contraction de leurs unités motrices. C. R. Acad. Sci. (Paris) 256, 5625–5627 (1963)Google Scholar
  10. Boyd, I.A., Davey, M.R.: Composition of Peripheral Nerves. Edinburgh: Livingstone 1968Google Scholar
  11. Burke, R.E., Levine, D.N., Tsairis, P., Zajac, F.E.: Physiological types and histochemical profiles in motor units of the cat gastrocnemius. J. Physiol. (Lond.) 234, 723–748 (1973)CrossRefGoogle Scholar
  12. Burke, R.E., Levine, D.N., Salcman, M., Tsairis, P.: Motor units in cat soleus muscle: physiological, histochemical and morphological characteristics. J. Physiol. (Lond.) 238, 503–514 (1974)Google Scholar
  13. Edström, L., Kugelberg, E.: Histochemical composition, distribution of fibres and fatiguability of single motor units. Anterior tibial muscle of the rat. J. Neurol. Neurosurg. Psychiat. 31, 424–433 (1968)Google Scholar
  14. Eldred, E., Bridgman, C.F., Swett, J.E., Eldred, B.: Quantitative comparisons of muscle receptors of the cat's medial gastrocnemius, soleus and extensor digitorum brevis muscles. In: Symposium on Muscle Receptors. (Ed. D. Barker), pp. 207–213. Hong Kong: Hong Kong University Press 1962Google Scholar
  15. Emonet-Dénand, F., Jami, L., Laporte, Y.: Skeleto-fusimotor axons in hind-limb muscles of the cat. J. Physiol. (Lond.) 249, 153–166 (1975)Google Scholar
  16. Emonet-Dénand, F., Laporte, Y., Proske, U.: Contraction of muscle fibers in two adjacent muscles innervated by branches of the same motor axon. J. Neurophysiol. 34, 132–138 (1971)Google Scholar
  17. Gauthier, G.F.: Fiber types in mammalian skeletal muscle and their relationship to functional activity. In: Advances in Muscle Biology. (Ed. A. M. Pearson), Vol. 2. Michigan State University (in press, 1975)Google Scholar
  18. Green, D.G., Kellerth, J.O.: Intracellular autogenetic and synergetic effects of muscular contraction on flexor motoneurones. J. Physiol. (Lond.) 193, 73–94 (1967)Google Scholar
  19. Henneman, E., Somjen, G., Carpenter, D.O.: Functional significance of cell size in spinal motoneurons. J. Neurophysiol. 28, 560–580 (1965)Google Scholar
  20. Houk, J., Henneman, E.: Responses of Golgi tendon organs to active contraction of the soleus muscle of the cat. J. Neurophysiol. 30, 466–481 (1967)Google Scholar
  21. Jami, L., Petit, J.: Correlation between axonal conduction velocity and tetanic tension of motor units in four muscles of the cat hind limb. Brain Res. 96, 114–118 (1975)Google Scholar
  22. Matthews, B.H.C.: Nerve endings in mammalian muscle. J. Physiol. (Lond.) 78, 1–53 (1933)Google Scholar
  23. Stephens, J.A., Stuart, D.G.: The responses of Golgi tendon organs to contraction of single motor units in a mixed mammalian muscle. J. Physiol. (Lond.) 242, 62–63P (1974)Google Scholar
  24. Stuart, D.G., Goslow, G.E., Mosher, C.G., Reinking, R.M.: Stretch responsiveness of Golgi tendon organs. Exp. Brain Rss. 10, 463–476 (1970)Google Scholar
  25. Stuart, D.G., Mosher, C.G., Gerlach, R.L., Rienking, R.M.: Mechanical arrangement and transducing properties of Golgi tendon organs. Exp. Brain Res. 14, 274–292 (1972)Google Scholar
  26. Swett, J.E., Eldred, E.: Distribution and numbers of stretch receptors in medial gastrocnemius and soleus muscles of the cat. Anat. Rec. 137, 453–460 (1960)Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • L. Jami
    • 1
  • J. Petit
    • 1
  1. 1.Laboratoire de NeurophysiologieCollège de FranceParisFrance

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