Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Tactile discrimination study of the dorsal column-medial lemniscal system and spino-cervico-thalamic tract in cat

  • 126 Accesses

  • 39 Citations

Summary

The role of two spinal sensory pathways, the dorsal column (DC) pathway and the spino-cervico-thalamic tract (SCTT), involved in tactile discrimination was studied. Pour lesion groups of cats (DC lesion, SCTT lesion, combined DC and SCTT lesion, and sham-operated) were tested to discriminate various degrees of roughness. Animals with either the SCTT or the combined lesions performed at around 50–60% level under all the conditions tested. On the other hand, those with the DC lesion and sham-operations generally attained 80–100% level of performance.

A difference between the DC group and sham-operated group was found in their rate of learning and ability for finer discrimination. These results are interpreted as an indication that a duplicity in transmission of tactile sensation exists, the DC pathway being more specific than the SCTT.

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

References

  1. Andersen, P., S.A. Andersson and S. Landgren: Some properties of the thalamic relay cells in the spino-cervico-lemniscal path. Acta physiol. scand. 68, 72–83 (1966).

  2. Andersson, S.A.: Projection of different spinal pathways to the second somatic sensory area in cat. Acta physiol. scand. 56, Suppl. 194, 1–74 (1962).

  3. Amassian, V.E., et J.L. Devito: La transmission dans le noyean de Burdach. Coloq. int. cent. nat. esh. sci. 67, 353–393 (1957).

  4. Cajal, S.R.: Histologie du systeme nerveux. Vol. I, 1909, reprinted in Madrid 1952, p. 910.

  5. Demirjian, C., and F. Morin: Microelectrode analysis of thalamic projections of the lateral cervical nucleus. Anat. Rec. 148, 275 (1964).

  6. Diamond, T., W. Randall and L. Springer: Tactual localization in cats deprived of cortical areas SI and SII and the dorsal columns. Psychol. Sci. 1, 261–262 (1964).

  7. Grant, G.: Spinal course and somatotopically localized termination of the spinocerebellar tracts. An experimental study in the cat. Acta physiol. scand. 56, Suppl. 193, 1–45 (1962).

  8. Ha, H., and C.N. Liu: Synaptology of spinal afferents in the lateral cervical nucleus of the cat. Exp. Neurol. 8, 318–327 (1963).

  9. —: Organization of the spino-cervico-thalamic system. J. comp. Neurol. 127, 445–470 (1966).

  10. Kafpers, C.U.A., G.C. Huber and E.C. Crosby: The comparative anatomy of the nervous system of vertebrates, including man. Vol. I. New York: Hafner Co. (1936).

  11. Kruger, L., R. Siminoff and P. Witkovsky: Single neuron analysis of dorsal column nuclei and spinal nucleus of trigeminal in cat. J. Neurophysiol. 24, 333–349 (1961).

  12. Landgren, S., A. Nordwal and C. Wengstrom: The location of the thalamic relay in the spino-cervico-lemniscal path. Acta physiol. scand. 65, 164–175 (1965).

  13. Levitt, M., and R. Schwartzman: Spinal sensory tracts and two point tactile sensitivity. Anat. Rec. 154, 377 (1966).

  14. Lindquist, E.F.: Design and Analysis of Experiments in Psychology and Education, p. 385. Boston: Houghton, Mifflin Co. (1956).

  15. Lundberg, A., and O. Oscarsson: Three ascending spinal pathways in the dorsal part of the lateral funiculus. Acta physiol. scand. 51, 1–16 (1961).

  16. Mark, R.F., and J. Steiner: Cortical projection of impulses in myelinated cutaneous afferent nerve fibers of the cat. J. Physiol. (Lond.) 142, 544–562 (1958).

  17. Morin, F.: A new spinal pathway for cutaneous impulses. Amer. J. Physiol. 183, 245–252 (1955).

  18. —, and J.V. Catalano: Central connections of a cervical nucleus (nucleus cervicalis lateralis of the cat). J. comp. Neurol. 103, 17–32 (1955).

  19. —, S.T. Kitai, H. Portnoy and C. Demirjian: Afferent projections to the lateral cervical nucleus: A microelectrode study. Amer. J. Physiol. 204, 667–675 (1963).

  20. Norrsell, U.: The spinal afferent pathways of conditioned reflexes to cutaneous stimuli in the dog. Exp. Brain Res. 2, 269–282 (1966).

  21. —: Afferent pathways of a tactile conditioned reflex after cortical somatosensory ablations. Physiol. and Beh. 2, 83–86 (1967).

  22. —: Tactile pathways from the hindlimb to the cerebral cortex in cat. Acta physiol. scand. 54, 9–17 (1962).

  23. Oswaldo-Cruz, E., and C. Kidd: Functional properties of neurons in the lateral cervical nucleus of the cat. J. Neurophysiol. 27, 1–14 (1964).

  24. Perl, E.R., D.G. Whitlock and J.R. Gentry: Cutaneous projection to second-order neurons of the dorsal column system. J. Neurophysiol. 25, 337–358 (1962).

  25. Poggio, G.F., and V.B. Mountcastle: A study of the functional contributions of the lemniscal and spinothalamic systems to somatic sensibility. Johns Hopk. Hosp. Bull. 106, 266–316 (1960).

  26. Rexed, B., and A. Bkodal: The nucleus cervicalis lateralis: A spinocerebellar relay nucleus. J. Neurophysiol. 14, 399–407 (1951).

  27. —, and G. Strom: Afferent nervous connections of the lateral cervical nucleus. Acta physiol. scand. 25, 219–229 (1952).

  28. Stevens, S.S.: Handbook of Experimental Psychology, p. 600. New York: John Wiley Co. (1951).

  29. Taub, A.: Local, segmental and supraspinal interaction with a dorsolateral spinal cutaneous afferent system. Exp. Neurol. 10, 357–374 (1964).

  30. —: The spinocervical tract: Dorsal column linkage, conduction velocity, primary afferent spectrum. Exp. Neurol. 13, 1–21 (1965).

  31. Whitlock, D.G., and E.R. Perl: Afferent projection through ventrolateral funiculi to thalamus of cat. J. Neurophysiol. 22, 133–148 (1959).

Download references

Author information

Additional information

This work was supported by USPHS Grants NB 00403, AM 6705 and FR 5384-07.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kitai, S.T., Weinberg, J. Tactile discrimination study of the dorsal column-medial lemniscal system and spino-cervico-thalamic tract in cat. Exp Brain Res 6, 234–246 (1968). https://doi.org/10.1007/BF00235126

Download citation

Key Words

  • Tactile discrimination
  • Dorsal column-medial lemniscus
  • Spino-cervico-thalamic tract
  • Cat