title: The ascending connections of the torus semicircularis central nucleus in Chrysemys scripta elegans.
abstract: Horseradish peroxidase was injected into the torus semicircularis central nucleus of the red-eared turtle Chrysemys scripta elegans. The following observations were made. Axons originating in the central nucleus project ipsilaterally through the tectoreuniens tract to the ipsilateral nucleus reunions. A second tract leaves the central nucleus medioventrally, courses under the floor of the cerebral aqueduct and terminates as an axonal field in the contralateral central nucleus. Finally, there was a small pathway to the deep layers of the ipsilateral optic tectum.
mesh_terms: D000818:Animals; D001306:Auditory Pathways / Q000033:anatomy & histology; D001307:Auditory Perception / Q000502:physiology; D001369:Axons / Q000648:ultrastructure; D006735:Horseradish Peroxidase; D008636:Mesencephalon / Q000033:anatomy & histology*; D014426:Turtles / Q000033:anatomy & histology*; D000159:Vestibulocochlear Nerve / Q000033:anatomy & histology*
chemical_list: D006735:Horseradish Peroxidase