The location of the SC in Eptesicus fuscus on the dorsal surface of the brain. The SC lies beneath two layers of thin bone, and is ∼1.4 mm rostral-to-caudal and 1.0 mm medial-to-lateral. nCAT, Nucleus of the central acoustic tract; Cb, cerebellum; CN, cochlear nucleus; IC, inferior colliculus; nLL, nuclei of the lateral lemniscus; MGB, medial geniculate body;SC, superior colliculus; SG, suprageniculate nucleus; SOC, superior olivary complex. Adapted from Dear et al. (1993a) with permission.