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Related Experiment Videos

Devising an objective nasal vibration test for nasal resonatory disorders.

H S Choi1, Y J Park, K M Kim

  • 1Institute of Logopedics and Phoniatrics, Yonsei University College of Medicine, Seoul, Korea. hschoi@yumc.yonsei.ac.kr

Journal of Voice : Official Journal of the Voice Foundation
|June 20, 2001
PubMed
Summary

A new device objectively measures nasal resonance using vibration sensors. It effectively distinguishes between hypernasality and hyponasality in patients.

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Area of Science:

  • Speech-language pathology
  • Biomedical engineering
  • Otolaryngology

Background:

  • Hypernasality and hyponasality are common speech disorders affecting resonance.
  • Objective measurement of nasal resonance is crucial for accurate diagnosis and treatment planning.
  • Existing methods for assessing nasal resonance may be subjective or lack precision.

Purpose of the Study:

  • To evaluate the clinical applicability of a novel device for objectively measuring nasal resonating vibration.
  • To assess the device's ability to differentiate between hypernasality and hyponasality.

Main Methods:

  • A piezoelectric vibratory sensor was used to measure nasal resonating vibration.
  • The study included 10 normal volunteers, 10 patients with hypernasality, and 10 with nasal polyposis.

Related Experiment Videos

  • Ratios of specific speech passages (/ng/ to /a/, /mama/ to /papa/) and induced cul-de-sac resonance were analyzed.

    • Main Results:

    • The device demonstrated distinct measurement patterns for normal, hypernasal, and hyponasal subjects.
    • Control subjects exhibited higher /ng/ to /a/ and /mama/ to /papa/ ratios compared to the hypernasality group.
    • Nasal vibration changes after induced cul-de-sac resonance were significant in control and hypernasal groups, but minimal in the hyponasal group.

    Conclusions:

    • The new device is clinically applicable for objectively assessing nasal resonance.
    • It can accurately detect nasal resonatory disorders.
    • The device effectively differentiates between hypernasality and hyponasality, aiding in diagnosis.