title: The mismatch negativity cortical evoked potential elicited by speech in cochlear-implant users.
abstract: The mismatch negativity (MMN) event-related potential is a non-task related neurophysiologic index of auditory discrimination. The MMN was elicited in eight cochlear implant recipients by the synthesized speech stimulus pair /da/ and /ta/. The response was remarkably similar to the MMN measured in normal-hearing individuals to the same stimuli. The results suggest that the central auditory system can process certain aspects of speech consistently, independent of whether the stimuli are processed through a normal cochlea or mediated by a cochlear prosthesis. The MMN shows promise as a measure for the objective evaluation of cochlear-implant function, and for the study of central neurophysiological processes underlying speech perception.
authors.affiliation: Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois.
authors.forename: N
authors.initials: N
authors.lastname: Kraus
authors.forename: A G
authors.initials: AG
authors.lastname: Micco
authors.forename: D B
authors.initials: DB
authors.lastname: Koch
authors.forename: T
authors.initials: T
authors.lastname: McGee
authors.forename: T
authors.initials: T
authors.lastname: Carrell
authors.forename: A
authors.initials: A
authors.lastname: Sharma
authors.forename: R J
authors.initials: RJ
authors.lastname: Wiet
authors.forename: C Z
authors.initials: CZ
authors.lastname: Weingarten
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003054:Cochlear Implants; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013067:Speech Perception / Q000502:physiology*