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Updated: Jun 22, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
Published on: November 25, 2017
[Postural study on healthy subjects during experimental vocal effort].
A Lagier1, M Vaugoyeau, C Bouché
1CHU La Timone, Fédération d'ORL et de chirurgie Cervico-faciale, 264 rue St Pierre, 13385 Marseille cedex 05, France. aude.lagier@laposte.net
Communicating in noisy environments or at a distance causes objective postural changes. These body posture adjustments increase with greater communication challenges, demonstrating a global strategy to enhance vocal effort and communication efficiency.
Area of Science:
- Speech and Hearing Sciences
- Biomechanics
- Acoustic Phonetics
Context:
- Environmental obstacles like noise and distance challenge effective communication.
- Vocal effort performance is a key area of study in speech science.
- Understanding the interplay between posture and voice production is crucial.
Purpose:
- To investigate how posture and vocal acoustics change under conditions requiring increased vocal effort.
- To analyze objective postural modifications during vocalization in response to environmental challenges.
- To examine the relationship between laryngeal effort, posture, and overall communication strategy.
Summary:
- 20 healthy women communicated numbers under varying noise and distance conditions.
- Posture was analyzed using the SMART system; vocal acoustics and electroglottography used the EVA system.
- Results indicated objective postural modifications that increased with environmental obstacles and anticipated vocal production.
Impact:
- Demonstrates that vocal effort is part of a larger behavioral strategy.
- Highlights the integral role of posture in optimizing communication efficiency.
- Provides insights into the physiological responses to communication demands.
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