Bilateral projections from the superior colliculus to the suprageniculate nucleus in the cat: A WGA-HRP/double fluorescent tracing study

Yoshimitsu Y. Katoh, G. Benedek, Shigeyuki Deura

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Following WGA-HRP injection into the right suprageniculate nucleus of the cat brain, retrogradely-labeled neurons were found not only in the ipsilateral, but also in the contralateral superior colliculi. After WGA-HRP injection into the unilateral superior colliculus, anterogradely-labeled axon terminals were observed in the bilateral suprageniculate nuclei, and electron microscopic examination revealed that these were large terminals which made asymmetric synaptic contacts with dendrites. When a different kind of fluorescent tracer was injected into each suprageniculate nucleus (Fast blue and Nuclear yellow), double-labeled neurons were observed in the rostral and middle portions of both superior colliculi. These results suggest that there are direct bilateral projections from the superior colliculus to the suprageniculate nuclei, and that some of these projections originate from branching colliculo-suprageniculate axons.

Original languageEnglish
Pages (from-to)298-302
Number of pages5
JournalBrain Research
Volume669
Issue number2
DOIs
Publication statusPublished - Jan 16 1995

Fingerprint

Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate
Superior Colliculi
Cats
nuclear yellow
Neurons
Injections
Presynaptic Terminals
Dendrites
Axons
Electrons
Brain

Keywords

  • Bilateral projection
  • Cat
  • Double-labeled neuron
  • Extrageniculate visual system
  • Fluorescent tracer
  • Light and electron microscopy
  • Superior colliculus
  • Suprageniculate nucleus
  • WGA-HRP

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

Cite this

Bilateral projections from the superior colliculus to the suprageniculate nucleus in the cat : A WGA-HRP/double fluorescent tracing study. / Katoh, Yoshimitsu Y.; Benedek, G.; Deura, Shigeyuki.

In: Brain Research, Vol. 669, No. 2, 16.01.1995, p. 298-302.

Research output: Contribution to journalArticle

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