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Vol. 69. Issue 2.
Pages 95-98 (March - April 2018)
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Vol. 69. Issue 2.
Pages 95-98 (March - April 2018)
Original article
Correlation Between Measures of Perceptual Assessment of GRB and Contact Quotient (CQ)
Correlación entre medidas de evaluación perceptual GRB y cociente de contacto
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Rodrigo Maximiliano Jerez
Facultad de Ciencias de la Salud, Universidad Católica de La Plata, La Plata, Argentina
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Tables (3)
Table 1. Diagnosis by Videolaryngostroboscopy.
Table 2. Perceptual Parameters Assessed.
Table 3. Interassessor Agreement in the Perceptive-auditory Analysis of Each Vocal Parameter.
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Abstract
Objective

The 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 method

70 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.

Results

The 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.

Conclusions

It 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.

Keywords:
Electroglottography
Perceptual evaluation
Contact quotient
GRB
Breathiness
Roughness
Dysphonia
Resumen
Objetivo

El objetivo del presente trabajo es correlacionar los parámetros perceptuales de grade, roughness y breathiness de la escala GRBAS con el cociente de contacto (CQ) obtenido por medio de electroglotografía.

Material y método

Se analizaron 70 muestras de voces normales y patológicas por medio de análisis auditivo-perceptual y electroglotografía. El análisis perceptual fue llevado a cabo por dos jueces expertos en función de los parámetros grade, roughness y breathiness. Los valores de CQ fueron obtenidos por medio del sistema VoceVista Versión 3.3.7.

Resultados

Los resultados demuestran correlación fuerte entre CQ y soplo (r = -0,869), mientras que, entre grado de disfonía y CQ (r = -0,567), y aspereza y CQ (r = 0,643) la correlación es media.

Conclusiones

Es posible establecer relaciones entre el comportamiento vibratorio de los pliegues vocales y el fenómeno resultante que percibimos auditivamente. El parámetro más relevante al respecto fue breathiness. La correlación entre grade, roughness y CQ fue más débil.

Palabras clave:
Electroglotografía
Evaluación perceptual
Cociente de contacto
Grb
Soplo
Aspereza
Disfonía

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