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Excitation and inhibition in the visual center of Rana temporaria

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Abstract

Analysis of postsynaptic unit responses in the visual center ofRana temporaria showed that optic nerve fibers with high and low conduction velocities usually converge on a single neuron of the tectum opticum (TO). In response to stimulation of the optic nerve a complex depolarization potential consisting of 3 (or possibly 4) EPSPs was recorded in one group of neurons; these EPSPs were probably generated through excitation of several groups of afferent fibers. Either an increase or a decrease in the EPSPs can be observed in the TO neurons in response to repetitive and paired stimulation of the optic nerve. Postsynaptic inhibitory responses of some TO neurons, probably of direct and recurrent origin, are discussed.

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Authors
  1. V. I. Gusel'nikov
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  2. A. S. Luk'yanov
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Additional information

M. V. Lomonosov Moscow State University. Translated from Neirofiziologiya, Vol. 3, No. 6, pp. 637–643, November–December, 1971.

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Gusel'nikov, V.I., Luk'yanov, A.S. Excitation and inhibition in the visual center of Rana temporaria. Neurophysiology 3, 476–480 (1971). https://doi.org/10.1007/BF01063761

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  • DOI: https://doi.org/10.1007/BF01063761

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