González-Hernández T, Mantolán-Sarmiento B, González-González B, Ferres-Torres R, Meyer G
Department of Anatomy, Faculty of Medicine, University of La Laguna, Tenerife, Spain.
Neurosci Lett. 1994 Feb 14;167(1-2):77-80. doi: 10.1016/0304-3940(94)91031-6.
Retrograde transport of horseradish peroxidase (HRP) and dihydronicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d) histochemistry were used in order to determine whether NADPH-d-positive neurons of the ventral lateral geniculate nucleus (LGv) project to the superior colliculus (SC). Our results show that intensely stained NADPH-d neurons are restricted to the lateral half of the magnocellular division of LGv (LGv-MC), where they represent 50% of the total number of retrogradely labeled neurons. These findings indicate: (1) that LGv provides an important NADPH-d input to SC, and (2) that within the population of geniculo-tectal neurons, which constitute a morphologically well defined neuronal type, there are two different subclasses, one being NADPH-d positive and the other NADPH-d negative.
