Reciprocal connections between the rabbit suprageniculate pretectal nucleus and the superior colliculus: tracer study with horseradish peroxidase and fluorogold

Vis Neurosci. Mar-Apr 1994;11(2):347-53. doi: 10.1017/s0952523800001681.


Connections of the rabbit suprageniculate pretectal nucleus (SP) with the superior colliculus were explored by means of retrograde transport of horseradish peroxidase or Fluorogold. Large injections centered in the superficial and intermediate tectal layers resulted in bilateral retrograde transport to the medium-size multipolar neurons of the suprageniculate pretectal nucleus. Horseradish peroxidase was also transported anterogradely into the ipsilateral and contralateral neuropiles of the suprageniculate pretectal nucleus. The labeled cells in SP were dispersed throughout the nucleus, including its dorsal, wedge-shaped, internal portion. Labeling was mainly ipsilateral, and less abundant on the contralateral side.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Axonal Transport
  • Brain Mapping
  • Fluorescent Dyes
  • Geniculate Bodies / physiology*
  • Horseradish Peroxidase
  • Neurons / physiology
  • Rabbits
  • Superior Colliculi / physiology*
  • Thalamic Nuclei / physiology
  • Visual Pathways / physiology*


  • Fluorescent Dyes
  • Horseradish Peroxidase