Detecting arytenoid cartilage misplacement through acoustic and electroglottographic jitter analysis

M.n. Vieira, A.g.d. Maran, F.r. Mcinnes, Mervyn Jack

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The paper describes a comparative study of acoustic and electroglottographic (EGG) jitter extracted from simultaneous recordings of 45 dysphonic patients. The estimated jitter values agreed to within ±20% in 67% of the patients, the difference being above +20% and below -20% in 13% and 20% of the cases, respectively. In the group below -20%, EGG jitter increased due to an increase in EGG shimmer and videoendoscopic images revealed abnormal movements of the arytenoid cartilage caused, possibly, by minor selective paralysis of the intrinsic laryngeal muscles. This observation suggests a possible application of signal analysis techniques in support of the diagnosis of laryngeal disorders.
Original languageEnglish
Title of host publicationProceedings of the Fourth International Conference on Spoken Language, 1996
EditorsH. Timothy Bunnell, William Idsardi
Pages741-744
Number of pages4
Volume2
DOIs
Publication statusPublished - Oct 1996

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