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Journal of Neurology, Neurosurgery, and Psychiatry logoLink to Journal of Neurology, Neurosurgery, and Psychiatry
. 1980 Oct;43(10):897–906. doi: 10.1136/jnnp.43.10.897

Regulation of the firing pattern of single motor units.

S Andreassen, A Rosenfalck
PMCID: PMC490710  PMID: 7441269

Abstract

The normal control of force in the anterior tibial muscle was reflected by a fast regulation of the interval pattern of single motor units. Short and long intervals alternated, the correlation between successive intervals was negative and "double discharges" were present. The discharge rate at 60% of maximal effort was at most 20 Hz.

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Selected References

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

  1. Andreassen S., Rosenfalck A. Recording from a single motor unit during strong effort. IEEE Trans Biomed Eng. 1978 Nov;25(6):501–508. doi: 10.1109/TBME.1978.326283. [DOI] [PubMed] [Google Scholar]
  2. Baldissera F., Gustafsson B., Parmiggiani F. Adaptation in a simple neurone model compared to that of spinal motoneurones. Brain Res. 1973 Mar 30;52:382–384. doi: 10.1016/0006-8993(73)90676-8. [DOI] [PubMed] [Google Scholar]
  3. Baldissera F., Parmiggiani F. Relevance of motoneuronal firing adaptation to tension development in the motor unit. Brain Res. 1975 Jun 27;91(2):315–320. doi: 10.1016/0006-8993(75)90555-7. [DOI] [PubMed] [Google Scholar]
  4. Burke R. E., Rudomin P., Zajac F. E., 3rd The effect of activation history on tension production by individual muscle units. Brain Res. 1976 Jun 18;109(3):515–529. doi: 10.1016/0006-8993(76)90031-7. [DOI] [PubMed] [Google Scholar]
  5. Büdingen H. J., Freund H. J. The relationship between the rate of rise of isometric tension and motor unit recruitment in a human forearm muscle. Pflugers Arch. 1976 Mar 11;362(1):61–67. doi: 10.1007/BF00588682. [DOI] [PubMed] [Google Scholar]
  6. Clamann H. P. Statistical analysis of motor unit firing patterns in a human skeletal muscle. Biophys J. 1969 Oct;9(10):1233–1251. doi: 10.1016/S0006-3495(69)86448-9. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Desmedt J. E., Godaux E. Ballistic contractions in man: characteristic recruitment pattern of single motor units of the tibialis anterior muscle. J Physiol. 1977 Jan;264(3):673–693. doi: 10.1113/jphysiol.1977.sp011689. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Elble R. J., Randall J. E. Motor-unit activity responsible for 8- to 12-Hz component of human physiological finger tremor. J Neurophysiol. 1976 Mar;39(2):370–383. doi: 10.1152/jn.1976.39.2.370. [DOI] [PubMed] [Google Scholar]
  9. Freund H. J., Büdingen H. J., Dietz V. Activity of single motor units from human forearm muscles during voluntary isometric contractions. J Neurophysiol. 1975 Jul;38(4):933–946. doi: 10.1152/jn.1975.38.4.933. [DOI] [PubMed] [Google Scholar]
  10. Freund H. J., Wita C. W. Computeranalyse des Intervallmusters einzelner motorischer Einheiten bei Gesunden und Patienten mit supraspinalen motorischen Störungen. Arch Psychiatr Nervenkr (1970) 1971;214(1):56–71. doi: 10.1007/BF00344627. [DOI] [PubMed] [Google Scholar]
  11. GRANIT R., KERNELL D., SHORTESS G. K. QUANTITATIVE ASPECTS OF REPETITIVE FIRING OF MAMMALIAN MOTONEURONES, CAUSED BY INJECTED CURRENTS. J Physiol. 1963 Oct;168:911–931. doi: 10.1113/jphysiol.1963.sp007230. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Granit R., Haase J., Rutledge L. T. Recurrent inhibition in relation to frequency of firing and limitation of discharge rate of extensor motoneurones. J Physiol. 1960 Dec;154(2):308–328. doi: 10.1113/jphysiol.1960.sp006581. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Grimby L., Hannerz J. Firing rate and recruitment order of toe extensor motor units in different modes of voluntary conraction. J Physiol. 1977 Jan;264(3):865–879. doi: 10.1113/jphysiol.1977.sp011699. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Gydikov A., Kosarov D. Some features of different motor units in human biceps brachii. Pflugers Arch. 1974 Feb 18;347(1):75–88. doi: 10.1007/BF00587056. [DOI] [PubMed] [Google Scholar]
  15. Joyce G. C., Rack P. M. The effects of load and force on tremor at the normal human elbow joint. J Physiol. 1974 Jul;240(2):375–396. doi: 10.1113/jphysiol.1974.sp010615. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Kranz H., Baumgartner G. Human alpha motoneurone discharge, a statistical analysis. Brain Res. 1974 Feb 22;67(2):324–329. doi: 10.1016/0006-8993(74)90282-0. [DOI] [PubMed] [Google Scholar]
  17. Lippold O. C. Oscillation in the stretch reflex arc and the origin of the rhythmical, 8-12 C-S component of physiological tremor. J Physiol. 1970 Feb;206(2):359–382. doi: 10.1113/jphysiol.1970.sp009018. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Mannard A., Stein R. B. Determination of the frequency response of isometric soleus muscle in the cat using random nerve stimulation. J Physiol. 1973 Mar;229(2):275–296. doi: 10.1113/jphysiol.1973.sp010138. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Mori S. Discharge patterns of soleus motor units with associated changes in force exerted by foot during quiet stance in man. J Neurophysiol. 1973 May;36(3):458–471. doi: 10.1152/jn.1973.36.3.458. [DOI] [PubMed] [Google Scholar]
  20. Person R. S., Kudina L. P. Discharge frequency and discharge pattern of human motor units during voluntary contraction of muscle. Electroencephalogr Clin Neurophysiol. 1972 May;32(5):471–483. doi: 10.1016/0013-4694(72)90058-2. [DOI] [PubMed] [Google Scholar]
  21. Petajan J. H. Clinical electromyographic studies of diseases of the motor unit. Electroencephalogr Clin Neurophysiol. 1974 Apr;36(4):395–401. doi: 10.1016/0013-4694(74)90189-8. [DOI] [PubMed] [Google Scholar]
  22. Rosenfalck A., Andreassen S. Impaired regulation of force and firing pattern of single motor units in patients with spasticity. J Neurol Neurosurg Psychiatry. 1980 Oct;43(10):907–916. doi: 10.1136/jnnp.43.10.907. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Shiavi R., Negin M. The effect of measurement errors on correlation estimates in spike-interval sequences. IEEE Trans Biomed Eng. 1973 Sep;20(5):374–378. [PubMed] [Google Scholar]
  24. Tanji J., Kato M. Firing rate of individual motor units in voluntary contraction of abductor digiti minimi muscle in man. Exp Neurol. 1973 Sep;40(3):771–783. doi: 10.1016/0014-4886(73)90111-8. [DOI] [PubMed] [Google Scholar]
  25. Tanji J., Kato M. Recruitment of motor units in voluntary contraction of a finger muscle in man. Exp Neurol. 1973 Sep;40(3):759–770. doi: 10.1016/0014-4886(73)90110-6. [DOI] [PubMed] [Google Scholar]

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