Skip to main content
SpringerLink
Log in

Facts and reflections on thalamo cortical reverberation of impulses

  • Published:
Neurophysiology Aims and scope

Abstract

Experiments on cats, either unanesthetized or anesthetized with various doses of pentobarbital, showed that the cortical rhythmic after-discharge ("slow after-activity"), which has been regarded as a manifestation of reverberation of impulses in thalamocortical circuits [17], consists of a burst of spontaneous "spindles" evoked by stimulation. This conclusion is supported by the following facts: Spontaneous "spindles" and the rhythmic after-discharge respond absolutely identically (disappear) to activation of the EEG and deepening of pentobarbital anesthesia. The absence of thalamocortical reverberation is also indicated by the preservation of a rhythmic after-discharge (to clicks), synchronous with the cortex, in the thalamic relay nucleus (the medial geniculate body) after cooling or after removal of its projection zone.

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. V. I. Gusel'nikov and A. Ya. Supin, Rhythmic Activity of the Brain [in Russian], Moscow University Press (1968).

  2. D. V. Kadzhaya, S. P. Narikashvili, and A. S. Timchenko, "Thalamocortical relations during the rhythmic after-discharge," Soobsch. Akad. Nauk Gruz. SSR,67, 681 (1972).

    Google Scholar 

  3. S. P. Narikashvili, "The origin of the after-activity in the sensory cortex of the cat during stimulation of different parts of the afferent pathway," Biol. Zh. Armenii,35, 102 (1972).

    Google Scholar 

  4. S. P. Narikashvili, D. V. Kadzhaya, and A. S. Timchenko, "The origin of the cortical after-activity to peripheral stimulation," Soobshch. Akad. Nauk Gruz. SSR,64, 177 (1971).

    Google Scholar 

  5. S. P. Narikashvili, D. V. Kadzhaya, and A. S. Timchenko, "The origin of the rhythmic after-discharge in the auditory cortex," Zh. Vyssh. Nerv. Deyat.,22, 843 (1972).

    Google Scholar 

  6. S. P. Narikashvili, A. S. Timchenko, and D. V. Kadzhaya, "Interaction between "spindles" in various parts of the cerebral cortex," Biol. Zh. Armenii,26, 85 (1973).

    Google Scholar 

  7. A. S. Timchenko, D. V. Kadzhaya, and S. P. Narikashvili, "Interaction between "spindles" in different areas of the cerebral cortex," Soobshch. Akad. Nauk Gruz. SSR,67, 433 (1972).

    Google Scholar 

  8. E. D. Adrian, "Afferent discharges to the cerebral cortex from peripheral sense organs," J. Physiol. (London),100, 159 (1941).

    Google Scholar 

  9. E. D. Adrian, "Rhythmic discharges from the thalamus," J. Physiol. (London),113, 9P (1951).

  10. P. Andersen and S. A. Andersson, Physiological Basis of the Alpha Rhythm, New York, Appleton-Century-Crofts (1968).

    Google Scholar 

  11. S. H. Bartley and G. H. Bishop, "Factors determining the form of the electrical response from the optic cortex of the rabbit," Amer. J. Physiol.,103, 173 (1932).

    Google Scholar 

  12. G. H. Bishop, "Cyclic changes in excitability of the optic pathway of the rabbit," Amer. J. Physiol.,103, 213 (1932).

    Google Scholar 

  13. G. H. Bishop, "The interpretation of cortical potentials," in: Cold Spring Harbor Symp. Quant. Biol.,4, 305 (1936).

    Google Scholar 

  14. G. H. Bishop, and J. O'Leary, "Components of the electrical response of the optic cortex of the rabbit," Amer. J. Physiol.,117, 292 (1936).

    Google Scholar 

  15. F. Bremer, "Cerebral and cerebellar potentials," Physiol. Rev.,38, 357 (1958).

    PubMed  Google Scholar 

  16. F. Bremer and V. Bonnet, "Interprètation des reactions rhythmiques prolongèes des aires sensorielles del'écorce cèreèbrale," Electroenceph. Clin. Neurophysiol.,2, 389 (1950).

    PubMed  Google Scholar 

  17. N.-T. Chang, "The repetitive discharges of cortico-thalamic reverberating circuits," J. Neurophysiol.,13, 235 (1950).

    PubMed  Google Scholar 

  18. N.-T. Chang, "The evoked potentials," in: Handbook of Physiology, Sect. 1, Vol. 1, Chapter XII, Washington D. C. (1959), pp. 299–313.

  19. E. W. Dempsey and R. S. Morison, "The production of rhythmically recurrent cortical potentials after localized thalamic stimulation," Amer. J. Physiol.,135, 293 (1941).

    Google Scholar 

  20. A. Forbes, "The interpretation of spinal reflexes in terms of present knowledge of nerve conduction," Physiol. Rev.,2, 361 (1922).

    Google Scholar 

  21. A. Forbes, "The mechanisms of reactions," in: C. Murchison (editor), Handbook of General Experimental Psychology, Clark Univ. Press, Worcester (1934), pp. 155–203.

    Google Scholar 

  22. R. Galambos, J. E. Rose, R. B. Bromiley, and J. R. Hughes, "Microelectrode studies on medial geniculate body of the cat. II. Responses to clicks," J. Neurophysiol.,15, 359 (1952).

    PubMed  Google Scholar 

  23. R. Lorente de Nó, "Studies of the structure of the cerebral cortex," J. Psychol. Neurol.,45, 381 (1933).

    Google Scholar 

  24. R. Lorente de Nó., "Studies of the structure of the cerebral cortex. II. Continuation of the study of the ammonic system," J. Psychol. Neurol.,46, 113 (1934).

    Google Scholar 

  25. R. Lorente de Nó, "Facilitation of motoneurones," Amer. J. Physiol.,113, 505 (1935).

    Google Scholar 

  26. R. Lorente de Nó, "Inhibition of motoneurones," in: The Problems of Nervous Physiology and Behavior, Tiflis, Publ. Georgian Branch Acad. Sci. USSR (1936), pp. 231–246.

  27. R. Lorente de Nó, "Analysis of the activity of the chains of internuncial neurons," J. Neurophysiol.,1, 207 (1938).

    Google Scholar 

  28. R. S. Morison and D. L. Bassett, "Electrical activity of the thalamus and basal ganglia in decorticate cats," J. Neurophysiol.,8, 309 (1945).

    Google Scholar 

Download references

Authors
  1. S. P. Narikashvili
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Institute of Physiology, Academy of Sciences of the Georgian SSR, Tbilisi. Translated from Neirofiziologiya, Vol. 7, No. 4, pp. 339–345, July–August, 1975.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Narikashvili, S.P. Facts and reflections on thalamo cortical reverberation of impulses. Neurophysiology 7, 261–265 (1975). https://doi.org/10.1007/BF01063236

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01063236

Keywords

Search

Navigation