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The effect of chain fibre ‘driving’ on the length sensitivity of primary sensory endings in the tenuissimus, peroneus tertius and soleus muscles

  • I. A. Boyd
  • P. R. Murphy
  • C. Mann

Abstract

Direct observation of cat muscle spindles has shown that driving of primary endings (one afferent spike per γ efferent impulse constitutes 1:1 driving) by static γ axons is due to mechanical excitation of the small spirals of the primary sensory ending by oscillating nuclear chain fibres (Boyd et al., 1977). Driving has now been studied in 25 tenuissimus spindles and two from each of the peroneus tertius and soleus muscles to assess the generality of the phenomenon.

Keywords

Soleus Muscle Muscle Length Final Length Chain Fibre Rapid Muscle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Boyd, I.A., Gladden, M.H., McWilliam, P.N. & Ward, J. (1977). Control of dynamic and static nuclear bag fibres and nuclear chain fibres by gamma and beta axons in isolated cat muscle spindles. J. Physiol., Lond., 265. 133–162.Google Scholar
  2. Boyd, I.A., Gladden, M.H. & Ward, J. (1983). Suppression of the length sensitivity of primary sensory endings by nuclear chain fibres in cat muscle spindles. J. Physiol., Lond., 339, 59–60P.Google Scholar
  3. Dutia, M.B., Murray-Smith, D.J., Rosenberg, J.R. & Wilson, R. (1977). The dependence of ‘driving’ of Ia axons on muscle length and fusimotor stimulation frequency. J. Physiol., Lond., 273, 30–31P.Google Scholar

Copyright information

© I. A. Boyd and M. H. Gladden 1985

Authors and Affiliations

  • I. A. Boyd
  • P. R. Murphy
  • C. Mann

There are no affiliations available

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