Protocol for Restricting Head Movement when Recording Ultrasound Images of Speech

McLeod, Sharynne and Wrench, Alan A (2008) Protocol for Restricting Head Movement when Recording Ultrasound Images of Speech. Asia Pacific Journal of Speech, Language and Hearing, 11. pp. 23-29. ISSN 1361-3286

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Ultrasound has been used as a diagnostic and intervention tool for speechlanguage pathology in order to examine tongue function during speech because it is readily accessible and non-invasive. Mid-sagittal or coronal dynamic two-dimensional images of tongue position and movement can be obtained as there are particularly strong ultrasound wave reflections from boundaries between tissue and air. Despite its potential usefulness as a technique, there have been limited research applications due to difficulty stabilizing the ultrasound transducer. The current research evaluates a specially designed helmet fitted with a microconvex endocavity ultrasound transducer. To verify tongue/palate contact and aid in establishing the validity and reliability of data, a female adult simultaneously wore an electropalatographic palate during ultrasound and acoustic data collection. Palate traces were verified by the activation of all electrodes on the EPG palate and the absence of sound on the waveform and spectrograph. Data indicated that the palate trace had limited movement over 1 hour of recording.

Item Type: Article
Additional Information: Warning - describes a protocol which has now been superseded
Uncontrolled Keywords: ultrasound, speech instrumentation, objective measurement, electropalatograph, biofeedback
Divisions: School of Health Sciences > Clinical Audiology, Speech and Language Research Centre
Date Deposited: 16 May 2010 14:58
Last Modified: 19 Mar 2014 12:57


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