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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

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Published on: November 25, 2017

Vocal fatigue and its relation to vocal hyperfunction †.

Nancy Pearl Solomon¹

¹Walter Reed Army Medical Center, Washington, DC, USA.

International Journal of Speech-Language Pathology

|September 16, 2010

Summary

Vocal fatigue, characterized by increased effort and reduced voice function, may stem from prolonged phonation or compensatory muscle tension. Further research is needed to understand its causes and effective management strategies.

Area of Science:

Speech and Hearing Sciences
Voice Disorders
Occupational Voice Use

Background:

Vocal fatigue is a common concern for voice users, often perceived as increased effort and decreased voice function during phonation.
Its etiology is multifactorial, potentially involving neurophysiological and biomechanical effects of extended voice use.
Vocal fatigue can occur independently or as part of other voice disorders, complicating diagnosis and treatment.

Purpose of the Study:

To review current literature on vocal fatigue and its relationship with vocal hyperfunction.
To examine the definition, symptoms, and underlying bases of vocal fatigue.
To discuss current research approaches and suggest future research directions.

Main Methods:

Literature review of studies on vocal fatigue.

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Analysis of definitions, symptoms, and proposed etiologies of vocal fatigue.

Discussion of research methodologies, including subject selection, design, and measurement variables.

Main Results:

Vocal fatigue is defined by perceived increased phonatory effort and potential decrease in phonatory function.
Underlying factors include neurophysiological/biomechanical effects of prolonged phonation and compensatory strategies like muscle tension.
Previous studies identifying reliable observable responses to vocal fatigue have had limited success, though new methodologies show promise.

Conclusions:

Vocal fatigue is a complex condition influenced by extended phonation and compensatory behaviors.
Future research should focus on the relationship between vocal fatigue and other voice disorders, individual variability, and integrated management approaches.
Differential evaluation and management of neuromuscular, biomechanical, and central processes are crucial for addressing vocal fatigue effectively.