The Task Dynamic Model in Speech Production.
| Number | 808 |
|---|---|
| Year | 1991 |
| Drawer | 15 |
| Entry Date | 11/04/1999 |
| Authors | Saltzman, E. |
| Contact | |
| Publication | In H. F. M. Peters, W. Hulstijn, & C. W. Starkweather (eds.), Speech Motor Control and Stuttering. Elsevier Science Publishers. Excerpta Medica, Amsterdam. |
| url | http://www.haskins.yale.edu/Reprints/HL0808.pdf |
| Abstract | The communicative act of speaking entails the precise, spatiotemporal structuring of activity in the articulatory and phonatory apparatus, a multi-degree-of freedom dynamical system whose components must be coordinated over time in order to appropriately structure sound for a listener. This paper focusses on the gestural control schemes that underlie the spatiotemporal patterning of speech, within the framework of the task-dynamic model of speech production. This model represents an attempt to reconcile the linguistic hypothesis that speech involves an underlying sequencing of abstract, context-independent units, with the empirical observation of context-dependent interleaving of articulatory movements. Currently, the task-dynamic model provides an intrinsically dynamical account of interarticulator coordinative processes during unperturbed and mechanically perturbed gestures, as well as during intervals of gestural coproduction. Work is in progress to incorporate a serial dynamics of inter gestural coordination based on the dynamics of recurrent connectionist networks. Such dynamics will be used to intrinsically shape patterns of relative timing among the gestures themselves, in a hybrid (task + serial) dynamical model of speech production. Finally, implications of the present theoretical framework for understanding certain aspects of stuttering behavior are discussed. |
| Notes |
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