AUDITORY AND VESTIBULAR SYSTEMSAuditory scene analysis following unilateral inferior colliculus infarctChampoux, Françoisa; Paiement, Philippeb; Vannasing, Phetsamonec; Mercier, Claudec; Gagné, Jean-Pierrea; Lepore, Francob c; Lassonde, Maryseb cAuthor Information aSchool of Audiology and Speech Language Pathology bDepartment of Psychology, University of Montreal cSainte-Justine Hospital Research Center, Quebec, Canada Correspondence to François Champoux, École d'orthophonie et d'audiologie, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal (Québec), Canada H3C 3J7 Tel: +514 343 7458; fax: +514 343 2285; e-mail: [email protected] Received 30 July 2007; accepted 30 August 2007 NeuroReport: November 19, 2007 - Volume 18 - Issue 17 - p 1793-1796 doi: 10.1097/WNR.0b013e3282f1a96d Buy Metrics Abstract Event-related potentials in the form of mismatch negativity were recorded to investigate auditory scene analysis capabilities in a person with a very circumscribed haemorrhagic lesion at the level of the right inferior colliculus. The results provide the first objective evidence that processing at the level of the inferior colliculus plays an important role in human auditory frequency discrimination. Moreover, the electrophysiological data suggest that following this unilateral lesion, the auditory pathways fail to reorganize efficiently. © 2007 Lippincott Williams & Wilkins, Inc.