A Perturbation Study of Lip-Larynx Coordination.
| Number | 831 |
|---|---|
| Year | 1992 |
| Drawer | 15 |
| Entry Date | 11/04/1999 |
| Authors | Saltzman, E., Lofqvist, A., Kinsella-Shaw, J., Rubin, P. E., & Kay, B. |
| Contact | |
| Publication | Proceedings of the 1992 International Conference on Spoken Language Processing (ICSLP '92): Addendum, Banff, Alberta, Canada. Edmonton, Canada: Priority Printing. (pp.19-22). |
| url | http://www.haskins.yale.edu/Reprints/HL0831.pdf |
| Abstract | In this paper we examine the sequential dynamics governing bilabial and laryngeal gestures, using a mechanical perturbation paradigm that entails the application of randomly timed downward forces to the lower lip during productions of discrete speech sequences (p/). In addition to labial and jaw kinematics and speech acoustics, laryngeal movements were monitored using transillumination techniques. Results indicated that the temporal intervals between successive bilabial closing gestures were affected systematically by the perturbations. Most of the timing changes occurred during the lip opening phase of these intervals, while the closing phases were relatively resistant to temporal distortion. Additionally, perturbations induced systematic changes in the timing of peak laryngeal abduction for the second/p/, supporting the hypothesis that the laryngeal adduction gesture is coordinated temporally within the oral closing and opening gestures for the /p/ closure. While the effects of perturbations on the bilabial gestures appear to be relatively direct, the effects on the laryngeal gesture appear to be indirect, i.e. the perturbations advance and/or delay the timing of bilabial events which, in turn, alter the timing of the laryngeal gesture. |
| Notes |
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