We compared the influences of auditory and visual targets on the vestibulo-ocular reflex (VOR) in healthy adults, to investigate auditory, visual, and vestibular modality integration in location perception. Under head fixed target conditions, VOR gains with visual target decreased, compared with VOR gain in darkness. VOR gains with auditory target were as big as those in darkness. On the other hand, in earth fixed conditions, VOR gains increased and phase delay decreased with both visual and auditory target. These findings suggest that auditory stimuli with relative motion have an influence on the vestibule-ocular system.
