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Mandible and hyoid bone movements during speech.

J R Westbury1

  • 1Waiman Center, University of Wisconsin, Madison 53705-2280.

Journal of Speech and Hearing Research
|September 1, 1988
PubMed
Summary

Speech movements of the mandible and hyoid bone involve independent rotation and translation. This kinematic analysis suggests treating these speech articulators as rigid bodies moving in a plane.

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Area of Science:

  • Biomechanics of speech production
  • Articulatory phonetics
  • Human physiology

Background:

  • Limited understanding of mandible and hyoid bone movement during speech.
  • Previous studies focused primarily on the mandible.

Purpose of the Study:

  • To quantify rotational and translational movements of the mandible and hyoid bone during speech.
  • To investigate the independence of these movements.
  • To explore associations with speech variables.

Main Methods:

  • Analysis of high-speed cineradiography data from 27 disyllables.
  • Tracking of landmarks on the mandible and hyoid bone in the sagittal plane.
  • Calculation of position, orientation, and interdependencies.

Main Results:

  • Mandible and hyoid bone exhibit independent rotational and translational components during speech.
  • Movement ranges and interdependencies were quantified.
  • Findings align with previous mandible-only studies.

Conclusions:

  • Speech kinematics of the mandible and hyoid bone can be described by treating them as independent rigid bodies.
  • This approach supports detailed kinematic modeling of speech articulation.

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