Speech Prosody 2010

Chicago, IL, USA
May 10-14, 2010

Articulatory Evidence for Functional Coupling of Speech and Non-Speech Motor Tasks

Benjamin Parrell, Louis Goldstein, Sungbok Lee, Dani Byrd

Department of Linguistics, University of Southern California, USA

Control of speech production is part of the larger motor control system, and as such can be organized into coordinative structures (or functional synergies) with other motor behaviors, that can then be parameterized as single functional units. The current study explores this phenomenon, expanding previous findings with direct kinematic evidence of speech production. Findings indicate that amplitude of repetitive synchronized speech and manual movements covary systematically across repetitions. In addition, magnitude of the movement of both of these effectors is larger when the participant is instructed to place emphasis on a repetition with one effector, but not the other. Thus, control of speech prosody may modulate a functional synergy that is defined over a wide set of articulatory subcomponents, not just the speech motor system.

Index Terms: coordination, coupling, motor control, speech

Full Paper

Bibliographic reference.  Parrell, Benjamin / Goldstein, Louis / Lee, Sungbok / Byrd, Dani (2010): "Articulatory evidence for functional coupling of speech and non-speech motor tasks", In SP-2010, paper 857.