title: Distribution of visual and saccade related information in the monkey inferior colliculus.
abstract: The inferior colliculus (IC) is an essential stop early in the ascending auditory pathway. Though normally thought of as a predominantly auditory structure, recent work has uncovered a variety of non-auditory influences on firing rate in the IC. Here, we map the location within the IC of neurons that respond to the onset of a fixation-guiding visual stimulus. Visual/visuomotor associated activity was found throughout the IC (overall, 84 of 199 sites tested or 42%), but with a far reduced prevalence and strength along recording penetrations passing through the tonotopically organized region of the IC, putatively the central nucleus (11 of 42 sites tested, or 26%). These results suggest that visual information has only a weak effect on early auditory processing in core regions, but more strongly targets the modulatory shell regions of the IC.
authors.affiliation: Department of Psychology, Cornell University Ithaca, NY, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Bulkin
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Groh