tectospinal

adjective

tec·​to·​spi·​nal ˌtek-tō-ˈspīn-ᵊl 

: of, relating to, or being a tract of myelinated nerve fibers that mediate various visual and auditory reflexes and that originate in the superior colliculus, cross to the opposite side, and descend in the ventral funiculus of the spinal cord to terminate in the ventral horn of gray matter in the cervical region of the spinal cord

tectospinal pathways