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Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP Evaluating psychoacoustic measures for establishing Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP Evaluating psychoacoustic measures for establishing presence of tinnitus James A. Henry, Ph. D; Garnett P. Mc. Millan, Ph. D; Emily J. Thielman, MS; Gino Galvez, Ph. D; Tara L. Zaugg, Au. D; Edward Porsov, MS; Grayson Silaski, BSEE This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090

Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Aim – Develop and Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Aim – Develop and document defined test for detecting presence/absence of tinnitus with high degree of confidence. • Relevance – Veterans can claim tinnitus as “service-connected” disability. – Currently, determining presence of tinnitus is based on subjective reporting—objective measures do not exist. This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090

Method Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Used computer-automated, self-guided Method Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Used computer-automated, self-guided tinnitus evaluation system to conduct 3 phases of testing to compare psychoacoustic measures of tinnitus between participants with vs without tinnitus. – Phase 1 measures: loudness match, pitch match, minimum masking level, residual inhibition, Békésy, and forced-choice double staircase. – Phases 2 and 3 measures: chosen based on Phase 1 results. This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090

Method Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP Podiometer (“Pod”) used by Method Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP Podiometer (“Pod”) used by participants to respond to automated testing by turning encoder dial and depressing response buttons. Pod connects to computer and is hardwired to insert earphones. This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090

Results Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Number of tests Results Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Number of tests and time of testing decreased during each successive phase. • Differences were seen between groups: – Most notably, higher low-frequency loudness matches and higher median pitch matches were observed for participants with tinnitus. This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090

Conclusion Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Study did not Conclusion Slideshow Project DOI: 10. 1682/JRRD. 2012. 05. 0090 JSP • Study did not result in a defined test for detecting presence/absence of tinnitus. – But data did reveal significant differences in responses between groups with vs without tinnitus. • Results suggest that further efforts can produce a defined psychoacoustic test battery for identifying tinnitus. This article and any supplementary material should be cited as follows: Henry JA, Mc. Millan GP, Thielman EJ, Galvez G, Zaugg TL, Porsov E, Silaski G. Evaluating psychoacoustic measures for establishing presence of tinnitus. J Rehabil Res Dev. 2013; 50(4): 573– 84. http: //dx. doi. org/10. 1682/JRRD. 2012. 05. 0090