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Original Articles

An adaptive clinical test of temporal resolution: Age effects

, &
Pages 367-374 | Received 02 Mar 2010, Accepted 24 Dec 2010, Published online: 07 Feb 2011
 

Abstract

Abstract

Objective: Children with auditory processing disorder, as well as older adults with and without hearing loss, often report difficulty understanding speech in the presence of noise. There is evidence that deficient temporal resolution contributes to this difficulty. The purpose of this study was to establish within-channel (WC) and across-channel (AC) gap detection thresholds (GDTs) for participants ages 7 to 84 years. Design: GDTs were measured using narrow-band noise markers for two conditions of the Adaptive Tests of Temporal Resolution (ATTR): WC and AC. Study Sample: Participants were 29 children (ages 7-12 years) with normal hearing, 30 younger adults (ages 22-41 years) with normal hearing, and 60 older adults (ages 50 to 84 years) with varying hearing sensitivity. Results: GDTs are smallest and least variable for younger adults with normal hearing and are largest and most variable for the youngest children (ages 7-8 years). The GDTs of the other groups fell between those of the younger adults and youngest children. Group differences were more apparent for AC than WC conditions. Conclusions: WC and AC gap detection ability changes across the lifespan. The ATTR is an efficient tool for the assessment of temporal resolution at both ends of the lifespan.

Sumario

Objetivo: Los niños con trastornos en el procesamiento auditivo, así como los adultos con o sin hipoacusia, frecuentemente reportan dificultades para entender el lenguaje en presencia de ruido. Existe evidencia que las deficiencias en la resolución temporal contribuyen a esta dificultad. El propósito de este estudio fue establecer los umbrales de detección de brechas (GDT) dentro de los canales (WC) y a través de los canales (AC) para los participantes con edades entre 7 y 84 años. Diseño: Los GDT se midieron usando marcadores de ruido de banda estrecha para dos condiciones con la Prueba Adaptativa de Resolución Temporal (ATTR): WC y AC. Muestra: Los participantes fueron 29 niños (edades de 7 a 12 años) con audición normal, 30 adultos jóvenes (edades 22 a 41 años) con audición normal y 60 adultos mayores (edades de 50 a 84 años) con diferentes niveles de audición. Resultados: Los GDT son más pequeños y menos variables en los adultos jóvenes con audición normal, y más grandes y variables para en los niños pequeños (edades 7 a 8 años). Los GDT de los otros grupos se ubicaron entre los de los adultos jóvenes y los niños. Las diferencias grupales fueron más aparentes en la condición AC que en la WC. Conclusiones: La habilidad en la detección de brecha WC y AC cambia durante la vida. El ATTR es una herramienta eficiente para la evaluación de la resolución temporal en ambos extremos de la vida.

Acknowledgements

Portions of the data presented in this article were presented at the Florida Academy of Audiology meeting in Orlando, and the American Academy of Audiology convention in Charlotte in 2008.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper. The Adaptive Tests of Temporal Resolution (ATTR) is not a commercial product sold for profit; it is available at no charge from the developers, Drs. Lister and Roberts.

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