The influence of Auditory Acuity on Acoustic Variability and the Use of Motor Equivalece Durin Adaptation to a Perturbation
| Number | 1675 |
|---|---|
| Year | 2011 |
| Drawer | 28 |
| Entry Date | 01/31/2012 |
| Authors | Brunner, J., Ghosh, S., Hoole, P., Matthies, M. Tiede, M. & Perkell, J. |
| Contact | |
| Publication | Journal of Speech, Language, and Hearing research, v. 54, pp. 727-739 |
| url | http://www.haskins.yale.edu/Reprints/HL1675.pdf |
| Abstract | Purpose: The aim of this study was to relate speakers’ auditory acuity for the sibilant contrast, their use of motor equivalent trading relationships in producing the sibilant /S/, and their produced acoustic distance between the sibilants /s/ and /S/. Specifically, the study tested the hypotheses that during adaptation to a perturbation of vocal-tract shape, high-acuity speakers use motor equivalence strategies to a greater extent than do low-acuity speakers in order to reach their smaller phonemic goal regions, and that high-acuity speakers produce greater acoustic distance between 2 sibilant phonemes than do low-acuity speakers. Method: Articulographic data from 7 German speakers adapting to a perturbation were analyzed for the use of motor equivalence. The speakers’ produced acoustic distance between /s/ and /S/ was calculated. Auditory acuity was assessed for the same speakers. Results: High-acuity speakers used motor equivalence to a greater extent when adapting to a perturbation than did low-acuity speakers. Additionally, high-acuity speakers produced greater acoustic contrasts than did low-acuity-speakers. It was observed that speech rate had an influence on the use of motor equivalence: Slow speakers used motor equivalence to a lesser degree than did fast speakers. Conclusion: These results provide support for the mutual interdependence of speech perception and production. |
| Notes |
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