Electroglottographic Quasi-open quotient and amplitude in crescendo phonation

Journal of Voice : Official Journal of the Voice Foundation
T Hacki

Abstract

Crescendo phonation (swelltone) was used to evaluate the laryngeal tensioning behavior of seven normal speakers and of 12 dysphonic patients. EGG quasi-open quotient (qOq), stroboscopic open quotient, and vocal sound pressure level (SPL) were measured, and EGG amplitude and the mucosal wave were assessed qualitatively. For normal speakers, the qOq decreased greatly as vocal intensity increased. The same tendency was observed, but to a lesser extent, among hyperfunctional dysphonics. In contrast, qOq increased with vocal intensity among the hypofunctional dysphonics. The crescendo task combined with EGG assessment appears to offer a valid approach to the classification of laryngeal dysfunctions.

References

Jan 1, 1974·Folia phoniatrica·P Kitzing, B Sonesson

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Citations

Nov 30, 2004·Journal of Voice : Official Journal of the Voice Foundation·C JilekT Hacki
Sep 13, 2006·Logopedics, Phoniatrics, Vocology·Christian Herbst, Sten Ternström
Mar 22, 2012·Logopedics, Phoniatrics, Vocology·Elina KankareTiina Pylkkänen
Oct 22, 2016·Journal of Voice : Official Journal of the Voice Foundation·Paulina KrasnodębskaHenryk Skarżyński
Aug 1, 2018·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·A SzkiełkowskaH Skarżyński
Dec 12, 2019·Otolaryngologia polska. The Polish otolaryngology·Agata SzkiełkowskaHenryk Skarżyński
Jun 5, 2019·Journal of Voice : Official Journal of the Voice Foundation·Tom de HoopHidenori Inohara

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