Identified retinal axons occupy postsynaptic positions in the optic tectum of Bufo marinus.

R. Gábriel, C. Straznicky

Research output: Contribution to journalArticle

Abstract

Horseradish peroxidase was applied to the proximal stump of the cut optic nerve, and the anterogradely transported tracer was visualised by the cobalt-intensified diaminobenzidine method. The optic fibre receiving laminae of the optic tectum were systematically searched for those synapses in which the tracer-filled profiles occupied postsynaptic positions. Optic terminals were rarely but regularly postsynaptic to unlabelled, small clear vesicle-containing profiles, mostly in lamina A. Quantitative analysis showed that only in 0.95% of the synapses formed by optic fibres could this arrangement be substantiated. These results suggest that presynaptic modulatory mechanisms may play a role in optic information processing.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalNeurobiology
Volume2
Issue number3
Publication statusPublished - 1994

Fingerprint

Bufo marinus
Superior Colliculi
Synapses
Axons
Horseradish Peroxidase
Optic Nerve
Cobalt
Automatic Data Processing

Keywords

  • Anura
  • axoaxonic contacts
  • electron microscopy
  • horseradish peroxidase
  • optic tectum

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Identified retinal axons occupy postsynaptic positions in the optic tectum of Bufo marinus. / Gábriel, R.; Straznicky, C.

In: Neurobiology, Vol. 2, No. 3, 1994, p. 235-243.

Research output: Contribution to journalArticle

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