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Original Articles

The gaps-in-noise test: Gap detection thresholds in normal-hearing young adults

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Pages 238-245 | Received 23 Jan 2007, Published online: 07 Jul 2009
 

Abstract

The aim of this study was to establish parameters for the gaps-in-noise test in normal-hearing young adults. One hundred subjects (50 males and 50 females) received an audiological evaluation to rule out hearing loss and auditory processing disorder. The gaps-in-noise test was then conducted on all subjects. The mean gap detection threshold was 4.19 ms. A psychometric function by gap duration was constructed, revealing that the percentage of correct responses was less than or equal to 5% for a gap duration of 2 ms, 10–30% for a gap duration of 3 ms, 60–70% for a gap duration of 4 ms, and over 96% for gap durations of 5 ms or longer. The results suggest that the data obtained can be applied as reference values for future testing. In the subjects evaluated, the gaps-in-noise test proved to be consistent with low variability.

Abbreviations
GIN=

Gaps-in-noise

GDTh=

Gap detection thresholds

Abbreviations
GIN=

Gaps-in-noise

GDTh=

Gap detection thresholds

Sumario

El objetivo de este estudio fue establecer parámetros para la prueba de brechas-en-ruido en adultos jóvenes con audición normal. A cien sujetos (50 hombres y 50 mujeres) se les practicó una evaluación audiológica para descartar una pérdida auditiva o un trastorno de procesamiento auditivo. La prueba de brechas en ruido se llevó a cabo en todos los sujetos. El umbral medio de detección de la brecha fue de 4.19 ms. Se construyó una función psicométrica por duración de la brecha, revelando que el porcentaje de respuestas correctas fue menor o igual a 5% para una duración de la brecha de 2 ms, 10–30% para una duración de la brecha de 3 ms, 60–70% para una duración de la brecha de 4 ms, y más del 96% para una duración de la brecha de 15 ms o más. Los resultados sugieren que los datos obtenidos pueden ser aplicados como valores de referencia para evaluaciones futuras. En los sujetos evaluados, las pruebas de brecha-en-ruido mostraron ser consistentes con una baja variabilidad.

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