Schematic diagram of the experimental design. Electrical stimulation was delivered to the left cochlear nucleus (CN), which projects to the right inferior colliculus (IC), medial auditory thalamus (MT), and basilar pontine nuclei (PN). The right PN then projects to the left cerebellum. The left cerebellum is necessary for conditioning of the left eye (Freeman, Halverson, & Poremba, 2005a). The dotted line depicts the midline.