Document Detail

An adaptive clinical test of temporal resolution: Within-channel and across-channel gap detection.
MedLine Citation:
PMID:  21303227     Owner:  NLM     Status:  Publisher    
Abstract Objective: Several methods exist to measure temporal resolution in a clinical setting. The Adaptive Tests of Temporal Resolution (ATTR?) are unique in that they incorporate an adaptive psychophysical procedure to present stimuli via computer sound card. The purpose of this study was to determine if ATTR gap detection thresholds (GDTs) were stable across presentation levels (80 dB SPL, listener-selected level) and sound cards (high-end, inexpensive). Design: GDTs were measured using three conditions of the ATTR: broad-band noise within-channel (BBN-WC), narrowband noise within-channel (NBN-WC), and narrowband noise across-channel (NBN-AC). Analysis of the acoustical properties of ATTR stimuli was made by measuring the electrical signals produced by each sound card. Study Sample: Participants were 30 young adults with normal hearing. Results: The ATTR GDTs did not differ between presentation levels for all three stimulus conditions. Also, neither ATTR stimuli nor ATTR GDTs differed between sound cards for all conditions. Conclusions: The ATTR may be used in a clinical setting with a relatively inexpensive sound card and listener-selected levels. Normative performance values for each ATTR condition are provided. Sumario Objetivo: Existen varios m?todos en la cl?nica para medir la resoluci?n temporal. La prueba adaptativa para la resoluci?n temporal (ATTR@) es u?nica en el sentido en que incorpora un procedimiento psico-f?sico para presentar est?mulos por medio de una tarjeta de sonidos de una computadora. El prop?sito de este estudio fue determinar si los umbrales de detecci?n de brechas (GDT) de la ATTR eran estables en diferentes niveles de presentaci?n (80 dB SPL, nivel seleccionado por el oyente) y con diferentes tarjetas de sonido (hig-end, barata). Dise?o: Los GDT fueron medidos en tres condiciones de ATTR: banda ancha, ruido en el canal (BBN-WC), ruido de banda angosta en el canal (NBN-WC) y ruido de banda angosta a trav?s del canal (NBN-AC). El an?lisis de las propiedades ac?sticas de los est?mulos de ATTR fue realizado midiendo las se?ales el?ctricas producidas por cada tarjeta de sonido. Muestra: Los participantes fueron 30 adultos j?venes con audici?n normal. Resultados: Los GDT ATTR no difirieron en los niveles de presentaci?n en las tres condiciones de est?mulo. Adem?s, ni los est?mulos de ATTR ni los GDT ATTR difirieron en con las diferentes tarjetas de sonido en todas las condiciones. Conclusiones: Los ATTR pueden ser utilizados en condiciones cl?nicas con una tarjeta de sonido relativamente barata y a niveles seleccionados por el oyente. Se proporcionan los valores normativos de desempe?o para cada condici?n de ATTR.
Jennifer J Lister; Richard A Roberts; Jean C Krause; Danielle Debiase; Heather Carlson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-8
Journal Detail:
Title:  International journal of audiology     Volume:  -     ISSN:  1708-8186     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140017     Medline TA:  Int J Audiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Communication Sciences and Disorders, University of South Florida, Tampa, USA.
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