Tongue Motion Patterns in Post-Glossectomy and Typical Speakers: A Principal Components Analysis Purpose In this study, the authors examined changes in tongue motion caused by glossectomy surgery. A speech task that involved subtle changes in tongue-tip positioning (the motion from /i/ to /s/) was measured. The hypothesis was that patients would have limited motion on the tumor (resected) side and would compensate ... Research Article
Research Article  |   June 01, 2014
Tongue Motion Patterns in Post-Glossectomy and Typical Speakers: A Principal Components Analysis
 
Author Affiliations & Notes
  • Maureen Stone
    University of Maryland School of Dentistry, Baltimore
  • Julie M. Langguth
    University of Maryland School of Dentistry, Baltimore
  • Jonghye Woo
    University of Maryland School of Dentistry, Baltimore
  • Hegang Chen
    University of Maryland School of Medicine, Baltimore
  • Jerry L. Prince
    Johns Hopkins University, Baltimore, MD
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Maureen Stone: mstone@umaryland.edu
  • Editor: Jody Kreiman
    Editor: Jody Kreiman×
  • Associate Editor: Caryn Easterling
    Associate Editor: Caryn Easterling×
Article Information
Research Issues, Methods & Evidence-Based Practice / Telepractice & Computer-Based Approaches / Speech, Voice & Prosody / Speech / Research Articles
Research Article   |   June 01, 2014
Tongue Motion Patterns in Post-Glossectomy and Typical Speakers: A Principal Components Analysis
Journal of Speech, Language, and Hearing Research, June 2014, Vol. 57, 707-717. doi:10.1044/1092-4388(2013/13-0085)
History: Received April 4, 2013 , Revised June 19, 2013 , Accepted July 19, 2013
 
Journal of Speech, Language, and Hearing Research, June 2014, Vol. 57, 707-717. doi:10.1044/1092-4388(2013/13-0085)
History: Received April 4, 2013; Revised June 19, 2013; Accepted July 19, 2013
Web of Science® Times Cited: 1

Purpose In this study, the authors examined changes in tongue motion caused by glossectomy surgery. A speech task that involved subtle changes in tongue-tip positioning (the motion from /i/ to /s/) was measured. The hypothesis was that patients would have limited motion on the tumor (resected) side and would compensate with greater motion on the nontumor side in order to elevate the tongue tip and blade for /s/.

Method Velocity fields were extracted from tagged magnetic resonance images in the left, middle, and right tongue of 3 patients and 10 controls. Principal components (PCs) analysis quantified motion differences and distinguished between the subject groups.

Results PCs 1 and 2 represented variance in (a) size and independence of the tongue tip, and (b) direction of motion of the tip, body, or both. Patients and controls were correctly separated by a small number of PCs.

Conclusions Motion of the tumor slice was different between patients and controls, but the nontumor side of the patients' tongues did not show excessive or adaptive motion. Both groups contained apical and laminal /s/ users, and 1 patient created apical /s/ in a highly unusual manner.

Acknowledgments
This research was supported in part by National Institutes of Health Grant R01 CA133015, awarded to the first author. Parts of this article were included in the second author's master's thesis. Parts of this article were presented at the 162nd meeting of the Acoustical Society of America, October/November 2011.
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