Skip to main content
SpringerLink
Log in

Distribution of myelinated and nonmyelinated nerve fibers of a cat cutaneous nerve in the spinal roots

  • Published:
Neurophysiology Aims and scope

Abstract

The distribution of myelinated and nonmyelinated nerve fibers of the saphenous nerve of cats in the ventral and dorsal roots of the spinal cord was investigated by methods improving the signal—noise ratio in records of evoked responses from the nerve. The fibers of this nerve enter the spinal cord through roots of segments L4–6. Nerve fibers with conduction velocities of between 80 and 0.38 m/sec were distributed in the dorsal roots of these segments. Four groups of nerve fibers with conduction velocities of 80–60, 40–30, 12.0–3.0, and 1.1–0.51 m/sec, possibly afferent in nature, were found in the ventral roots. The conditions of origin and detection of low-amplitude potentials in the roots of the spinal cord and the probable functional role of the nerve fibers in the ventral roots are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. I. S. Beritov and A. N. Bakuradze, "General inhibition during stimulation of ventral roots," Fiziol. Zh. SSSR,30, 45 (1941).

    Google Scholar 

  2. I. S. Beritov, Nervous Mechanisms of Behavior of Higher Animals [in Russian], Izd. Akad. Nauk SSSR, Moscow (1961).

    Google Scholar 

  3. N. I. Grashchenkov, Diagnosis and Treatment of Wounds of Peripheral Nerves [in Russian], Izd. Akad. Nauk SSSR, Moscow — Leningrad (1942).

    Google Scholar 

  4. A. I. Grinshtein, Pathways and Centers of the Nervous System [in Russian], Medgiz, Moscow (1946).

    Google Scholar 

  5. A. V. Zeveke, V. I. Myaderov, V. A. Utkin, and V. L. Shaposhnikov, "Myelinated fibers of a cat cutaneous nerve with slow conduction velocity," Byull. Éksp. Biol. Med.,75, No. 8, 6 (1973).

    Google Scholar 

  6. A. V. Zeveke, V. I. Myaderov, V. A. Utkin, and V. L. Shaposhnikov, "Conduction velocities in nonmyelinated cutaneous nerve fibers," Byull. Éksp. Biol. Med.,76, No. 9, 6 (1973).

    Google Scholar 

  7. V. P. Lebedev, V. A. Skobelev, and T. A. Bushmarina, "Properties of axons of sympathetic preganglionic neurons in the cat lumbar spinar cord," Neirofiziologiya,6, 143 (1974).

    Google Scholar 

  8. A. A. Mikeladze, "On endings of afferent nerve fibers in the lumbosacral region of the spinal cord," Arkh. Anat. Gistol. Émbriol.,48, 3 (1965).

    Google Scholar 

  9. V. L. Shaposhnikov, "Some physiological characteristics of myelinated and unmyelinated fibers with very low conduction velocity," Neirofiziologiya,6, 554 (1974).

    Google Scholar 

  10. R. E. Coggeshall, I. D. Coulter, and W. D. Willis, "Unmyelinated fibers in the ventral root," Brain Res.,57, 229 (1973).

    PubMed  Google Scholar 

  11. L. Daver and L. S. Pollock, "The peripheral pathway of painful sensation," Arch. Neurol. Psychiat.,24, 833 (1930).

    Google Scholar 

  12. J. Dempsher and J. M. Sprague, "A study of the distribution of sensory and motor fibres in lumbosacral plexus and in thoracic nerves of cat," Anat. Rec.,102, 195 (1950).

    Google Scholar 

  13. J. A. Dimsdale and J. M. Kemp, "Afferent fibres in ventral nerve root in the cat," J. Physiol. (London), 187, 25 (1966).

    Google Scholar 

  14. M. Kato and I. Hirata, "Sensory neurons in the spinal ventral roots of the cat," Brain Res.,7, 479 (1968).

    PubMed  Google Scholar 

  15. M. Kato and I. Tanji, "Physiological properties of sensory fibers in the spinal ventral roots," Jap. J. Physiol.,21, 71 (1971).

    PubMed  Google Scholar 

  16. J. Maruhashi, K. Mizuguchi, and I. Tasaki, "Action current in single afferent nerve fibres elicited by stimulation of the skin of the toad and the cat," J. Physiol. (London),117, 129 (1952).

    PubMed  Google Scholar 

  17. R. W. Ryall and M. F. Piercy, "Visceral afferent and efferent fibres in sacral ventral roots in cat," Brain Res.,23, 57 (1970).

    PubMed  Google Scholar 

  18. C. S. Sherrington, "On the constitution of nerves of skeletal muscles with remarks on recurrent fibres in ventral nerve-root," J. Physiol. (London),17, 211 (1894).

    Google Scholar 

  19. M. T. Syker and R. E. Coggeshall, "Unmyelinated fibers in human L4 and L5 ventral roots," Brain Res.,63, 490 (1973).

    PubMed  Google Scholar 

  20. I. Takagi and U. Ro, "The anatomy of the ventral spinal root," Igaku To Seibutsugaku,5, 35 (1944).

    Google Scholar 

  21. R. Wartenberg, "Klinische Studien zur Frage der Geltung des Bell-Magendieschen Gesetzes," Z. Neurol. Psychiat.,113, 518 (1928).

    Google Scholar 

  22. W. Wiederholt, "Stimulus intensity and site of excitation in human median nerve sensory fibres," J. Neurol. Neurosurg. Psychiat.,33, 438 (1970).

    PubMed  Google Scholar 

  23. W. D. Willis, R. R. Grace, and R. D. Skinner, "Ventral root afferent fibres and the recurrent inhibitory pathway," Nature,216, 1010 (1967).

    PubMed  Google Scholar 

Download references

Authors
  1. V. L. Shaposhnikov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Research Institute of Applied Mathematics and Cybernetics, N. I. Lobachevskii State University, Gor'kii. Translated from Neirofiziologiya, Vol. 7, No. 6, pp. 647–654, November–December, 1975.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Shaposhnikov, V.L. Distribution of myelinated and nonmyelinated nerve fibers of a cat cutaneous nerve in the spinal roots. Neurophysiology 7, 503–509 (1975). https://doi.org/10.1007/BF01062794

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01062794

Keywords

Search

Navigation