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Neurophysiological evidence of impaired musical sound perception in cochlear-implant users


Sandmann, P; Kegel, A; Eichele, T; Dillier, N; Lai, W K; Bendixen, A; Debener, S; Jäncke, Lutz; Meyer, Martin (2010). Neurophysiological evidence of impaired musical sound perception in cochlear-implant users. Clinical Neurophysiology, 121(12):2070-2082.

Abstract

OBJECTIVE: Music perception with a cochlear implant (CI) can be unsatisfactory because current-day implants are primarily designed to enable speech discrimination. The present study aimed at evaluating electrophysiological correlates of musical sound perception in CI users to help achieve the long-term goal of improved restoration of hearing in those individuals. METHODS: Auditory discrimination accuracy in adult CI users (n=12) and matched normal-hearing controls (n=12) was measured by behavioral discrimination tasks and mismatch negativity (MMN) recordings. Discrimination profiles were obtained by using a set of clarinet sounds (original/vocoded) varying along different acoustic dimensions (frequency/intensity/duration) and deviation magnitudes (four levels). RESULTS: Behavioral results and MMN recordings revealed reduced auditory discrimination accuracy in CI users. An inverse relationship was found between MMN amplitudes and duration of profound deafness. CONCLUSIONS: CI users have difficulties in discriminating small changes in the acoustic properties of musical sounds. The recently developed multi-feature MMN paradigm (Pakarinen et al., 2007) can be used to objectively evaluate discrimination abilities of CI users for musical sounds. SIGNIFICANCE: Measuring auditory discrimination functions by means of a multi-feature MMN paradigm could be of substantial clinical value by providing a comprehensive profile of the extent of restored hearing in CI users.

OBJECTIVE: Music perception with a cochlear implant (CI) can be unsatisfactory because current-day implants are primarily designed to enable speech discrimination. The present study aimed at evaluating electrophysiological correlates of musical sound perception in CI users to help achieve the long-term goal of improved restoration of hearing in those individuals. METHODS: Auditory discrimination accuracy in adult CI users (n=12) and matched normal-hearing controls (n=12) was measured by behavioral discrimination tasks and mismatch negativity (MMN) recordings. Discrimination profiles were obtained by using a set of clarinet sounds (original/vocoded) varying along different acoustic dimensions (frequency/intensity/duration) and deviation magnitudes (four levels). RESULTS: Behavioral results and MMN recordings revealed reduced auditory discrimination accuracy in CI users. An inverse relationship was found between MMN amplitudes and duration of profound deafness. CONCLUSIONS: CI users have difficulties in discriminating small changes in the acoustic properties of musical sounds. The recently developed multi-feature MMN paradigm (Pakarinen et al., 2007) can be used to objectively evaluate discrimination abilities of CI users for musical sounds. SIGNIFICANCE: Measuring auditory discrimination functions by means of a multi-feature MMN paradigm could be of substantial clinical value by providing a comprehensive profile of the extent of restored hearing in CI users.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Otorhinolaryngology
06 Faculty of Arts > Institute of Psychology
Dewey Decimal Classification:150 Psychology
610 Medicine & health
Language:English
Date:December 2010
Deposited On:09 Jul 2010 13:12
Last Modified:05 Apr 2016 14:11
Publisher:Elsevier
ISSN:1388-2457
Publisher DOI:https://doi.org/10.1016/j.clinph.2010.04.032
PubMed ID:20570555
Permanent URL: https://doi.org/10.5167/uzh-34860

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