Correlation Between Measures of Perceptual Assessment of GRB and Contact Quotient (CQ)

Publication date: March–April 2018
Source:Acta Otorrinolaringologica (English Edition), Volume 69, Issue 2
Author(s): Rodrigo Maximiliano Jerez
ObjectiveThe aim of the present work is to correlate the perceptual parameters grade, roughness, and breathiness of the GRB scale with the contact quotient (CQ) obtained by electroglotography.Material and method70 samples of normal and pathological voices were analysed by means of auditory-perceptual analysis and electroglotography. The perceptual analysis was carried out by two expert judges depending on the parameters grade, roughness, and breathiness. The CQ values were obtained through the VoceVista System Version 3.3.7.ResultsThe results show a strong correlation between CQ and breathiness (r=−0.869), whereas between grade of dysphonia and CQ (r=−0.567), and roughness and CQ (r=0.643) the correlation is average.ConclusionsIt is possible to establish relationships between the vibrational behaviour of the vocal folds and the resulting phenomenon that we perceive auditively. The most relevant parameter in this respect was breathiness. The correlation between grade, roughness and CQ was weaker.



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