Cerebellar vermis: essential for long-term habituation of the acoustic startle response.
The acoustic startle response in rats shows both short-term habituation, which recovers in seconds or minutes, and long-term habituation, which is effectively permanent. Lesions of the cerebellar vermis significantly attenuated long-term habituation without affecting the short-term process or altering initial response levels. In this response system the cerebellar vermis is part of an essential circuit for long-term habituation.
D000161:Acoustic Stimulation; D000818:Animals; D001306:Auditory Pathways / Q000033:anatomy & histology / Q000502:physiology; D002531:Cerebellum / Q000033:anatomy & histology / Q000502:physiology*; D006185:Habituation, Psychophysiologic / Q000502:physiology*; D008297:Male; D051381:Rats; D013216:Reflex, Startle / Q000502:physiology*; D012154:Reticular Formation / Q000032:analysis / Q000502:physiology