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Related Experiment Videos

Quantitative analysis of the velopharyngeal sphincter function during speech.

S Poppelreuter1, W Engelke, T Bruns

  • 1Department of Restorative Dentistry, Dental School, University of Goettingen, Germany.

The Cleft Palate-Craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
|April 5, 2000
PubMed
Summary

This study introduces a new method for analyzing velopharyngeal function using electromagnetic articulography and video endoscopy. The transverse sagittal quotient (TSQ) and terminal sphincter deformation (TSD) offer a dynamic interpretation of velopharyngeal closure.

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Area of Science:

  • Speech Science
  • Biomedical Engineering
  • Medical Imaging

Background:

  • Velopharyngeal function is crucial for speech intelligibility.
  • Objective quantitative analysis of velopharyngeal closure is challenging.
  • Existing methods lack dynamic assessment of closure patterns.

Purpose of the Study:

  • To introduce a novel quantitative analysis of velopharyngeal function.
  • To utilize electromagnetic articulography (EMA) and transoral video endoscopy.
  • To develop a dynamic interpretation of velopharyngeal closure patterns.

Main Methods:

  • Studied 16 healthy subjects producing /afa/ and /apa/ speech sounds.
  • Measured velar movements using EMA (sagittal, vertical).
  • Recorded velopharyngeal port (VPP) dimensions using video endoscopy (sagittal, transverse).

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Main Results:

  • Defined a transverse sagittal quotient (TSQ) for VPP morphology.
  • Quantified VPP closure using TSQ base values.
  • Identified terminal sphincter deformation (TSD) during closure phases.

Conclusions:

  • TSQ and TSD provide objective measures of velopharyngeal closure.
  • This approach enables a dynamic interpretation of velopharyngeal function.
  • The findings offer a new perspective on speech production mechanisms.