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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/17676

Title: Use of Electromagnetic midsagittal articulography in the study of swallowing
Authors: Steele, Catriona M.
Van Lieshout, Pascal H.H.M.
Keywords: electromagnetic midsagittal articulography
Issue Date: Apr-2004
Publisher: The American Speech-Language-Hearing Association
Citation: Steele, C.M. & Van Lieshout, P.H.H.M. (2004). The use of electromagnetic midsagittal articulography in the study of swallowing. Journal of Speech, Language and Hearing Research, 47(2), 342-352. Original article available at http://jslhr.asha.org/archive/
Abstract: The tongue functions as the primary articulator during the oropharyngeal stages of swallowing. However, detailed descriptions of the kinematics and spatiotemporal variability of tongue behaviors during swallowing are limited to a handful of analyses of data from the X-ray microbeam database. In this article, a new technique, electromagnetic midsagittal articulography (EMMA), is introduced for the high-resolution description of oral articulatory movements during swallowing. Data from 8 healthy, nondysphagic participants are used to illustrate the methods used for data collection and analysis. Movement data were collected for 3 fleshpoint positions on the tongue (blade, body, dorsum) during sequences of repeated discrete water swallows, and were characterized for variables of spatiotemporal variability and 4 discrete kinematic parameters (movement amplitude, peak velocity, duration, and kinematic stiffness). These data show that the movement trajectories measured using EMMA are consistent with descriptions from previous X-ray microbeam studies, indicating that EMMA is a feasible method for the detailed study of tongue movements during swallowing.
URI: http://hdl.handle.net/1807/17676
Appears in Collections:Toronto Rehab Publications

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