An ultrasound protocol for comparing tongue contours: upright vs. supine
Wrench, Alan A.
Scobbie, James M.
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Wrench, A., Cleland, J. & Scobbie, J. (2011) An ultrasound protocol for comparing tongue contours: upright vs. supine, Proceedings of 17th ICPhS, Hong Kong, , , pp. 2161-2164,
A study is described that employs ultrasound to measure the effects of gravity on production of vowels. The materials are designed to encourage consistent production over repetitions. A recording and analysis protocol is described which allows for correction for probe movement or rejection of data where correction is not possible. Results indicate a slight superior and posterior displacement of the tongue root in supine posture, consistent with a shift in the support structure of the tongue.