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Combined morphological and electrophysiological description of connections between single primary afferent fibres and individual motoneurons in the frog spinal cord

Experimental Brain Research volume 48, pages 459–462 (1982)Cite this article

Summary

In experiments on the isolated frog spinal cord the relationship between the statistical properties of the unitary EPSP and the number of synaptic contacts was determined when the primary afferent fibre used in evoking the EPSP and the motoneuron in which it was recorded were both stained with HRP. The size of the chemical component of the EPSP corresponds to the number of presynaptic boutons. Less obvious numerical correlation exists between the number of contact zones and the number of binomial units.

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Author information

Author notes

  1. R. Grantyn

    Present address: Carl-Ludwig-Institut für Physiologie, Karl-Marx-Universität, Liebigstr. 27, DDR-701, Leipzig

Affiliations

  1. Laboratory of Physiology of the Nerve Cell, Sechenov Institute, Thorez Pr. 44, 194223, Leningrad, USSR

    R. Grantyn,  A. I. Shapovalov & B. I. Shiriaev

Authors
  1. R. Grantyn
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  2. A. I. Shapovalov
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  3. B. I. Shiriaev
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Grantyn, R., Shapovalov, A.I. & Shiriaev, B.I. Combined morphological and electrophysiological description of connections between single primary afferent fibres and individual motoneurons in the frog spinal cord. Exp Brain Res 48, 459–462 (1982). https://doi.org/10.1007/BF00238624

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  • DOI: https://doi.org/10.1007/BF00238624

Key words

  • HRP injection
  • Synaptic boutons
  • Unitary EPSPs
  • Quantal analysis