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

Unit responses in the anterior zone of the suprasylvian gyrus to peripheral stimuli of different modalities

  • 11 Accesses


Unit responses in the anterior zone of the suprasylvian gyrus to visual, electrodermal, and acoustic stimulation were investigated in experiments on unanesthetized cats immobilized with tubocurarine. Electrical activity was recorded from 131 units, 121 of which were spontaneously active. In 65.5% of cells responses consisted of a short or long increase or a decrease in intensity of spike activity. Most cells (58.2%) were monosensory. Responses to visual stimulation were given by 72% of neurons, to electrodermal by 61.6%, and to acoustic by 9.3%. The corresponding latent periods were 20–40, 20–30, and 15–20 msec. Responses of the same neurons to different peripheral stimuli were uniform or they differed in their dynamics. Intracellular recording gave responses in the form of EPSPs (amplitude 4–5 mV, duration 60–80 msec) or, rarely, IPSPs (amplitude 2–3 mV, duration 160–200 msec). The functional organization of the associative cortex and mechanisms of analysis of incoming afferent information are discussed.

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

Literature cited

  1. 1.

    D. P. Artemenko and T. M. Mamonets, "Unit responses of the posterior suprasylvian gyrus of the cat to different stimuli," Neirofiziologiya,4, 375 (1972).

  2. 2.

    V. N. Kazakov and V. A. Izmest'ev, "Microelectrode analysis of the neuronal organization of the parietal associative cortex," Neirofiziologiya,4, 54 (1972).

  3. 3.

    F. N. Serkov and E. Sh. Yanovskii, "Postsynaptic potentials of neurons of the cat's auditory cortex," Neirofiziologiya,3, 339 (1972).

  4. 4.

    D. Albe-Fessard and A. Fessard, "Thalamic integrations and their consequences at the telencephalic level," in: G. Moruzzi (editor), Brain Mechanisms, Progress in Brain Research, Vol. 1, Elsevier, Amsterdam (1963), pp. 115–148.

  5. 5.

    D. Albe-Fessard and E. Gillet, "Convergences d'afférences d'origines corticales et périphériques vers le centre médian du chat anésthésié ou évillé," Electroenceph. Clin. Neurophysiol.,13, 257 (1961).

  6. 6.

    V. E. Amassian and R. V. Devito, "Unit activity in reticular formation and nearby structures," J. Neurophysiol.,17, 575 (1954).

  7. 7.

    P. Andersen, J. C. Eccles, and Y. Loyning, "Location of postsynaptic inhibitory synapses on hippocampal pyramids," J. Neurophysiol.,27, 592 (1964).

  8. 8.

    R. Dubner and L. T. Rutledge, "Recording and analysis of converging input upon neurons in cat association cortex," J. Neurophysiol.,27, 620 (1964).

  9. 9.

    R. Dubner and L. T. Rutledge, "Intracellular recording of the convergence of input upon neurons in cat association cortex," Exptl. Neurol.,12, 349 (1965).

  10. 10.

    R. Granit and C. G. Phillips, "Excitatory and inhibitory processes acting upon individual Purkinje cells of the cerebellum in cats," J. Physiol. (London),133, 520 (1956).

  11. 11.

    E. R. Kandel and W. A. Spencer, "Electrophysiology of hippocampal neurons. II. After-potentials and repetitive firing," J. Neurophysiol.,24, 243 (1961).

  12. 12.

    C. N. Latimer and T. T. Kennedy, "Cortical unit activity following transcallosal volleys," J. Neurophysiol.,24, 66 (1961).

  13. 13.

    J. K. Merlis and C. Lombroso, "Suprasylvian auditory responses in the cat," Electroenceph. Clin. Neurophysiol., Suppl.,3, 70 (1953).

  14. 14.

    W. A. Mickle and H. W. Ades, "Spread of evoked cortical potentials," J. Neurophysiol.,16, 608 (1953).

  15. 15.

    S. P. Narikashvili, D. V. Kajaia, and A. S. Timchenko, "Evoked potentials of association cortex," Brain Res.,14, 417 (1969).

  16. 16.

    E. R. Perl and J. V. Casby, "Localization of cerebral electrical activity: the acoustic cortex of cat," J. Neurophysiol.,17, 429 (1954).

  17. 17.

    C. Stefanis and H. Jasper, "Intracellular microelectrode studies of antidromic responses in cortical pyramidal tract neurons," J. Neurophysiol.,27, 828 (1964).

  18. 18.

    R. F. Thompson and K. M. Sindberg, "Auditory response fields in association and motor cortex of cat," J. Neurophysiol.,23, 87 (1960).

  19. 19.

    R. F. Thompson, R. H. Johnson, and J. J. Hoopes, "Organization of auditory, somatic, sensory and visual projection to association fields of cerebral cortex in the cat," J. Neurophysiol.,26, 343 (1963).

  20. 20.

    R. F. Thompson, H. E. Smith, and D. Bliss, "Auditory, somatic sensory, and visual response interactions and interrelations in association and primary cortical fields of the cat," J. Neurophysiol.,26, 365 (1963).

Download references

Additional information

A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 4, No. 4, pp. 368–374, July–August, 1972.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Shaban, V.M. Unit responses in the anterior zone of the suprasylvian gyrus to peripheral stimuli of different modalities. Neurophysiology 4, 277–282 (1972). https://doi.org/10.1007/BF01063743

Download citation


  • Cell Response
  • Latent Period
  • Electrical Activity
  • Functional Organization
  • Spike Activity