Coupling dynamics in speech gestures: amplitude and rate influences

Experimental Brain Research
Pascal H H M van Lieshout

Abstract

Speech is a complex oral motor function that involves multiple articulators that need to be coordinated in space and time at relatively high movement speeds. How this is accomplished remains an important and largely unresolved empirical question. From a coordination dynamics perspective, coordination involves the assembly of coordinative units that are characterized by inherently stable coupling patterns that act as attractor states for task-specific actions. In the motor control literature, one particular model formulated by Haken et al. (Biol Cybern 51(5):347-356, 1985) or HKB has received considerable attention in the way it can account for changes in the nature and stability of specific coordination patterns between limbs or between limbs and external stimuli. In this model (and related versions), movement amplitude is considered a critical factor in the formation of these patterns. Several studies have demonstrated its role for bimanual coordination and similar types of tasks, but for speech motor control such studies are lacking. The current study describes a systematic approach to evaluate the impact of movement amplitude and movement duration on coordination stability in the production of bilabial and tongue body gestur...Continue Reading

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Citations

Feb 13, 2020·Frontiers in Psychology·Aravind Kumar NamasivayamPascal van Lieshout
Jun 18, 2021·Frontiers in Psychology·Peter Q PfordresherCaroline Palmer

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