Saito M, Imagawa H, Sakakibara KI, Tayama N, Nibu KI, Amatsu M. High-speed digital imaging and electroglottography of tracheoesophageal phonation by Amatsu's method.
Acta Otolaryngol 2006;
126:521-5. [PMID:
16698703 DOI:
10.1080/00016480500415613]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
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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