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. 1977 Sep;270(3):835–850. doi: 10.1113/jphysiol.1977.sp011984

Effects of fusimotor stimulation on the response of the secondary ending of the muscle spindle to sinusoidal stretching (cat)

P D Cussons, M Hulliger, P B C Matthews
PMCID: PMC1353547  PMID: 143527

Abstract

1. The responsiveness of the spindle secondary ending to sinusoidal stretching has been studied using the soleus muscle of the anaesthetized cat. The sensitivity (impulses/sec firing per mm stretching) and the phase of the response were determined by computer averaging. The small linear range was studied at frequencies of 0·5-500 Hz, and also the larger non-linear range at 1 Hz.

2. In the linear range, stimulation of single fusimotor fibres (which were presumed to be static axons) approximately halved the sensitivity of the ending to low frequency stretching (up to 30 Hz), but did not produce any change in the phase of the response. Thus, from the point of view of motor function, fusimotor activity provides control of gain and a biasing signal, but not control of the relative sensitivity of the secondary ending to length and velocity.

3. In contrast, such stimulation slightly increased the responsiveness of the secondary ending to high-frequency stretching (100-500 Hz) and slightly advanced the phase of the response above that of the passive ending.

4. The results are discussed in relation to the effect of static fusimotor stimulation on the primary ending, and to findings on secondary endings in the decerebrate cat.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Appelberg B., Bessou P., Laporte Y. Action of static and dynamic fusimotor fibres on secondary endings of cat's spindles. J Physiol. 1966 Jul;185(1):160–171. doi: 10.1113/jphysiol.1966.sp007978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Brown M. C., Engberg I., Matthews P. B. Fusimotor stimulation and the dynamic sensitivity of the secondary ending of the muscle spindle. J Physiol. 1967 Apr;189(3):545–550. doi: 10.1113/jphysiol.1967.sp008184. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Brown M. C., Engberg I., Matthews P. B. The relative sensitivity to vibration of muscle receptors of the cat. J Physiol. 1967 Oct;192(3):773–800. doi: 10.1113/jphysiol.1967.sp008330. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Brown M. C., Lawrence D. G., Matthews P. B. Static fusimotor fibres and the position sensitivity of muscle spindle receptors. Brain Res. 1969 Jun;14(1):173–187. doi: 10.1016/0006-8993(69)90038-9. [DOI] [PubMed] [Google Scholar]
  5. CROWE A., MATTHEWS P. B. THE EFFECTS OF STIMULATION OF STATIC AND DYNAMIC FUSIMOTOR FIBRES ON THE RESPONSE TO STRETCHING OF THE PRIMARY ENDINGS OF MUSCLE SPINDLES. J Physiol. 1964 Oct;174:109–131. doi: 10.1113/jphysiol.1964.sp007476. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Chen W. J., Poppele R. E. Static fusimotor effect on the sensitivity of mammalian muscle spindles. Brain Res. 1973 Jul 16;57(1):244–247. doi: 10.1016/0006-8993(73)90585-4. [DOI] [PubMed] [Google Scholar]
  7. Cussons P. D., Hulliger M., Matthews P. B. Effects of fusimotor stimulation on the sensitivity of the muscle spindle secondary ending to small amplitude sinusoidal stretch [proceedings]. J Physiol. 1977 Feb;265(1):30P–31P. [PubMed] [Google Scholar]
  8. Durkovic R. G., Preston J. B. Evidence of dynamic fusimotor excitation of secondardy muscle spindle afferents in soleus muscle of cat. Brain Res. 1974 Jul 26;75(2):320–323. doi: 10.1016/0006-8993(74)90754-9. [DOI] [PubMed] [Google Scholar]
  9. Emonet-Dénand F., Laporte Y., Matthews P. B., Petit J. On the subdivision of static and dynamic fusimotor actions on the primary ending of the cat muscle spindle. J Physiol. 1977 Jul;268(3):827–861. doi: 10.1113/jphysiol.1977.sp011884. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Goodwin G. M., Hulliger M., Matthews P. B. The effects of fusimotor stimulation during small amplitude stretching on the frequency-response of the primary ending of the mammalian muscle spindle. J Physiol. 1975 Dec;253(1):175–206. doi: 10.1113/jphysiol.1975.sp011186. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Goodwin G. M., Matthews P. B. Effects of fusimotor stimulation on the sensitivity of muscle spindle endings to small-amplitude sinusoidal stretching. J Physiol. 1971 Oct;218 (Suppl):56P–58P. [PubMed] [Google Scholar]
  12. Hulliger M., Matthews P. B., Noth J. Effects of combining static and dynamic fusimotor stimulation on the response of the muscle spindle primary ending to sinusoidal stretching. J Physiol. 1977 Jun;267(3):839–856. doi: 10.1113/jphysiol.1977.sp011840. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Hulliger M., Matthews P. B., Noth J. Static and dynamic fusimotor action on the response of Ia fibres to low frequency sinusoidal stretching of widely ranging amplitude. J Physiol. 1977 Jun;267(3):811–838. doi: 10.1113/jphysiol.1977.sp011839. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. MATTHEWS P. B. THE RESPONSE OF DE-EFFERENTED MUSCLE SPINDLE RECEPTORS TO STRETCHING AT DIFFERENT VELOCITIES. J Physiol. 1963 Oct;168:660–678. doi: 10.1113/jphysiol.1963.sp007214. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Matthews P. B., Stein R. B. The sensitivity of muscle spindle afferents to small sinusoidal changes of length. J Physiol. 1969 Feb;200(3):723–743. doi: 10.1113/jphysiol.1969.sp008719. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Poppele R. E., Bowman R. J. Quantitative description of linear behavior of mammalian muscle spindles. J Neurophysiol. 1970 Jan;33(1):59–72. doi: 10.1152/jn.1970.33.1.59. [DOI] [PubMed] [Google Scholar]
  17. Poppele R. E., Chen W. J. Repetitive firing behavior of mammalian muscle spindle. J Neurophysiol. 1972 May;35(3):357–364. doi: 10.1152/jn.1972.35.3.357. [DOI] [PubMed] [Google Scholar]

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