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Perceptual differences between low-frequency analog and pulsatile stimulation as shown by single- and multidimensional scaling
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Stupak, Natalia, Padilla, Monica, Morse, Robert P. and Landsberger, David M. (2018) Perceptual differences between low-frequency analog and pulsatile stimulation as shown by single- and multidimensional scaling. Trends in Hearing, 22 . doi:10.1177/2331216518807535
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WRAP-perceptual-differences-low-frequency-analog-pulsatile-stimulation-single-multidimensional-scaling-Morse-2018.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons: Attribution-Noncommercial 4.0. Download (1054Kb) | Preview |
Official URL: http://dx.doi.org/10.1177/2331216518807535
Abstract
Cochlear-implant users who have experienced both analog and pulsatile sound coding strategies often have strong preferences for the sound quality of one over the other. This suggests that analog and pulsatile stimulation may provide different information or sound quality to an implant listener. It has been well documented that many implant listeners both prefer and perform better with multichannel analog than multichannel pulsatile strategies, although the reasons for these differences remain unknown. Here, we examine the perceptual differences between analog and pulsatile stimulation on a single electrode. A multidimensional scaling task, analyzed across two dimensions, suggested that pulsatile stimulation was perceived to be considerably different from analog stimulation. Two associated tasks using single-dimensional scaling showed that analog stimulation was perceived to be less Clean on average than pulsatile stimulation and that the perceptual differences were not related to pitch. In a follow-up experiment, it was determined that the perceptual differences between analog and pulsatile stimulation were not dependent on the interpulse gap present in pulsatile stimulation. Although the results suggest that there is a large perceptual difference between analog and pulsatile stimulation, further work is needed to determine the nature of these differences.
| Item Type: | Journal Article | ||||||
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| Subjects: | R Medicine > RF Otorhinolaryngology T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Engineering | ||||||
| Library of Congress Subject Headings (LCSH): | Cochlear implants, Multidimensional scaling, Amplitude modulation, Electric stimulation | ||||||
| Journal or Publication Title: | Trends in Hearing | ||||||
| Publisher: | Sage Publications, Inc. | ||||||
| ISSN: | 2331-2165 | ||||||
| Official Date: | 31 October 2018 | ||||||
| Dates: |
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| Volume: | 22 | ||||||
| DOI: | 10.1177/2331216518807535 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access | ||||||
| RIOXX Funder/Project Grant: |
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