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Updated: Aug 8, 2026
Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
Published on: November 25, 2017
High-speed digital imaging and electroglottography of tracheoesophageal phonation by Amatsu's method
Miki Saito1, Hiroshi Imagawa, Ken-Ichi Sakakibara
1Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe.
Background:
Our previous findings have indicated that the thyropharyngeal muscles form a retropharyngeal prominence during alaryngeal phonation via the TE fistula. This prominence forms a so-called 'neoglottis', which is thought to function as the vibratory source. To better understand the mechanism of TE phonation, we analyzed the vibration of the neoglottis using electroglottography (EGG) and a high-speed digital imaging system.
Patients And Methods:
Two volunteers who use TE phonation for their daily speech communication were subjected to this study. The vibrations of the neoglottis were recorded simultaneously as EGG and high-speed imaging with acoustic signals.
Results:
The vibrations of the neoglottis, recorded by means of high-speed digital imaging, were exactly synchronized with the waveforms of the acoustic signals and EGG.
Conclusions:
These results further confirm the neoglottis as the source of vibration during tracheoesophageal (TE) phonation.
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