Journal of comparative physiology

, Volume 129, Issue 3, pp 211–215

Activity of retinal class R3 ganglion cells in the ToadBufo bufo (L.) in response to moving configurational stimuli: Influence of the movement direction

  • J. -P. Ewert
  • H. Krug
  • G. Schönitz

DOI: 10.1007/BF00657656

Cite this article as:
Ewert, J.P., Krug, H. & Schönitz, G. J. Comp. Physiol. (1979) 129: 211. doi:10.1007/BF00657656


  1. 1.

    The question of the presence of functional symmetrical coupling in the excitatory receptive fields, ERF, of class R3 retinal ganglion cells (n = 25) was investigated by extracellular recordings from their fiber terminals in the optic tectum of Common Toads.

  2. 2.

    The relationship between neuronal discharge frequency and stimulus movement velocity was in part influenced by the direction of stimulus movement in thex,y-plane.

  3. 3.

    The sensitivity of class R3 neurons for different configurational moving stimuli as tested in this study, was maintained regardless of movement direction but was sharpest for movement in the vertical direction.

  4. 4.

    The distribution of excitation in the ERF was not quite symmetrical but the asymmetries appear to form no basis for the discrimination of moving configurational stimuli.




excitatory receptive field


inhibitory receptive field

Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • J. -P. Ewert
    • 1
  • H. Krug
    • 1
  • G. Schönitz
    • 1
  1. 1.Neuroethology and Biocybernetic LaboratoriesUniversity of KasselKasselGermany

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