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Related Concept Videos

Larynx01:21

Larynx

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The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
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Physical Assessment of the Respiratory Tract IV: Auscultation01:28

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Auditory Perception01:17

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Perceiving Loudness, Pitch, and Location01:21

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The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
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Physiologic and Acoustic Effects of Opera Performance.

Paul E Kwak1, C Richard Stasney2, Jeremy R Hathway2

  • 1Division of Laryngeal Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.

Journal of Voice : Official Journal of the Voice Foundation
|May 23, 2016
PubMed
Summary

Opera singers experience physiological changes in their larynx after performances. This study observed significant changes in the vocal fold mucosal wave, indicating a need for further research into these natural reactive changes.

Keywords:
Acoustic measures of voiceOperaProfessional voiceStroboscopyVocal performance

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Area of Science:

  • Vocal fold physiology
  • Laryngeal biomechanics
  • Singing voice science

Background:

  • Classical voice training is considered optimal for healthy singing.
  • The long-term effects of opera performance on the larynx are not well-documented.
  • Limited scientific data exists on post-performance physiological and acoustic changes in singers.

Purpose of the Study:

  • To investigate physiological and acoustic changes in the larynx of opera singers.
  • To describe the natural history of a performing larynx during a performance run.
  • To identify potential reactive changes in the operatic larynx.

Main Methods:

  • A prospective case series involving seven principal singers from the Houston Grand Opera.
  • Stroboscopic examinations (pre-rehearsal and post-performance) assessing vocal fold erythema, edema, masses, mucosal wave, and supraglottic posture.
  • Acoustic measurements were collected pre- and post-performance.

Main Results:

  • Statistically significant differences (P < 0.05) were found in the mucosal wave between pre- and post-performance stroboscopic exams.
  • Acoustic measures showed a trend towards increased harmonic-to-noise ratio and decreased frequency range post-performance.
  • Intra-rater reliability varied, and inter-rater reliability was generally poor.

Conclusions:

  • This pilot study documents physiological and acoustic alterations in the operatic larynx during rehearsals and performances.
  • The findings highlight the need for larger studies with more frequent serial examinations.
  • Systematic investigation is required to understand natural reactive changes in the performing larynx.