title: Multiple-unit responses to pitch changes in rabbits.
abstract: Multiple-unit activity (MUA) was recorded from the hippocampus (Hc), the visual cortex (VCx) and the cerebellar cortex (CerCx) in rabbits when pitch deviant tones were presented in a series of standard tones (oddball situation) and when standard tones were absent (deviant-alone situation). Significant MMN-like responses (deviant responses minus standard responses in the oddball situation) occurred in Hc, reflecting a MUA increase to the standards and its decrease to the deviants. In accordance with parallel ERPs reported earlier, the MMN-like responses reflected responses only to different presentation frequencies of stimuli. Non-selectivity in the pitch of such responses in VCx and a lack of an effect of the different stimulus repetition frequencies on responses in CerCx resulted in absent MMN-like responses in both of these locations.
authors.affiliation: University of Jyväskylä, Department of Psychology, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Ruusuvirta
authors.forename: T
authors.initials: T
authors.lastname: Korhonen
authors.forename: J
authors.initials: J
authors.lastname: Arikoski
authors.forename: K
authors.initials: K
authors.lastname: Kivirikko
mesh_terms: D000818:Animals; D002525:Cerebellar Cortex / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006624:Hippocampus / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D010897:Pitch Discrimination / Q000502:physiology*; D011817:Rabbits; D014793:Visual Cortex / Q000502:physiology*