Purpose: This study evaluated a novel method for characterizing jaw rotation using orientation data from a single electromagnetic articulography sensor. This method was optimized for clinical application, and a preliminary examination of clinical feasibility and value was undertaken. Method: The computational adequacy of the single-sensor orientation method was evaluated through comparisons of jaw-rotation histories calculated from dual-sensor positional data for 16 typical talkers. The clinical feasibility and potential value of single-sensor jaw rotation were assessed through comparisons of 7 talkers with dysarthria and 19 typical talkers in connected speech. Results: The single-sensor orientation method allowed faster and safer participant preparation, required lower data-acquisition costs, and generated less high-frequency artifact than the dual-sensor positional approach. All talkers with dysarthria, regardless of severity, demonstrated jaw-rotation histories with more numerous changes in movement direction and reduced smoothness compared with typical talkers. Conclusions: Results suggest that the single-sensor orientation method for calculating jaw rotation during speech is clinically feasible. Given the preliminary nature of this study and the small participant pool, the clinical value of such measures remains an open question. Further work must address the potential confound of reduced speaking rate on movement smoothness.
|Number of pages||15|
|Journal||American Journal of Speech-Language Pathology|
|Issue number||2Special Issue|
|State||Published - 2017|
Bibliographical noteFunding Information:
This work was supported with funding provided by National Science Foundation Grant NSF IIS-1320892 (awarded to Johnson and Berry), the American Speech-Language-Hearing Foundation’s 2011 New Century Scholars Research Grant (awarded to Berry), and the Marquette Regular Research Grant (awarded to Berry and Johnson). Portions of this work were presented at the 2016 Conference on Motor Speech.
© 2017 American Speech-Language-Hearing Association.
ASJC Scopus subject areas
- Developmental and Educational Psychology
- Linguistics and Language
- Speech and Hearing