title: Centrifugal fibers to the rat retina from the medial pretectal area and the periaqueductal grey matter.
abstract: Intraocular injections of several different retrograde tracers were made in albino rats. Retrogradely filled neurons were observed in two locations: the medial pretectal area and the contralateral periaqueductal grey matter, indicating that the pretectum and the mesencephalon are sources of centrifugal innervation to the rat retina.
mesh_terms: D000818:Animals; D004525:Efferent Pathways / Q000033:anatomy & histology; D008297:Male; D008636:Mesencephalon / Q000033:anatomy & histology*; D010487:Periaqueductal Gray / Q000033:anatomy & histology*; D051381:Rats; D011919:Rats, Inbred Strains; D012160:Retina / Q000033:anatomy & histology*