Title
Multidimensional scaling between acoustic and electric stimuli in cochlear implant users with contralateral hearingMultidimensional scaling between acoustic and electric stimuli in cochlear implant users with contralateral hearing
Author
Faculty/Department
Faculty of Social Sciences. Sociology
Faculty of Medicine and Health Sciences
Research group
Translational Neurosciences (TNW)
Department of Sociology
Publication type
article
Publication
Amsterdam,
Subject
Human medicine
Source (journal)
Hearing research. - Amsterdam
Volume/pages
306(2013), p. 29-36
ISSN
0378-5955
ISI
000327578200004
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
This study investigated the perceptual relationship between acoustic and electric stimuli presented to CI users with functional contralateral hearing. Fourteen subjects with unilateral profound deafness implanted with a MED-EL CI scaled the perceptual differences between pure tones presented to the acoustic hearing ear and electric biphasic pulse trains presented to the implanted ear. The differences were analyzed with a multidimensional scaling (MDS) analysis. Additionally, speech performance in noise was tested using sentence material presented in different spatial configurations while patients listened with both their acoustic hearing and implanted ears. Results of alternating least squares scaling (ALSCAL) analysis consistently demonstrate that a change in place of stimulation is in the same perceptual dimension as a change in acoustic frequency. However, the relative perceptual differences between the acoustic and the electric stimuli varied greatly across subjects. A degree of perceptual separation between acoustic and electric stimulation (quantified by relative dimensional weightings from an INDSCAL analysis) was hypothesized that would indicate a change in perceptual quality, but also be predictive of performance with combined acoustic and electric hearing. Perceptual separation between acoustic and electric stimuli was observed for some subjects. However, no relationship between the degree of perceptual separation and performance was found. (C) 2013 Elsevier B.V. All rights reserved.
E-info
https://repository.uantwerpen.be/docman/iruaauth/217047/2826502.pdf
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