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Speech Motor ControlNew developments in basic and applied research$
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Ben Maassen and Pascal van Lieshout

Print publication date: 2010

Print ISBN-13: 9780199235797

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780199235797.001.0001

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Recent advances in the physiological assessment of articulation: introducing 3D technology

Recent advances in the physiological assessment of articulation: introducing 3D technology

(p.317) Chapter 19 Recent advances in the physiological assessment of articulation: introducing 3D technology
Speech Motor Control

Bruce E. Murdoch

Oxford University Press

Recent years have seen the development and introduction of a range of new physiological instruments for investigating various aspects of articulatory function. Included among these techniques are electromagnetic articulography (EMA), electropalatography (EPG), and pressure-sensing EPG. This chapter describes and evaluates these techniques, highlighting their relative advantages, disadvantages, and specific applications in assessing articulation in normal and disordered speakers. Emphasis is given to those instruments that enable researchers and clinicians to examine articulatory functions in three dimensions, such as 3D EPG and 3D EMA (AG500). In addition, the development and application of pressure-sensing EPG is outlined. Each of these physiological techniques is described in terms of their component hardware and underlying principles of operation. Problems encountered in the development and application of each instrument are highlighted, including difficulties with calibration, accuracy of data, transducer limitations, and so on. Research findings reported to date based on each of the above physiological instruments are reviewed and the results summarized. Future development and potential application of 3D technologies in the rehabilitation of motor speech disorders by way of 3D physiological biofeedback are highlighted.

Keywords:   electromagnetic articulography, electropalatography, articulatory function, speech research, 3D technologies

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