Auditory localization by subjects with unilateral tinnitus

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2016-05-01
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Mcode
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Language
en
Pages
10
2280-2289
Series
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Volume 139, issue 5
Abstract
Tinnitus is associated with changes in neural activity. How such alterations impact the localization ability of subjects with tinnitus remains largely unexplored. In this study, subjects with self-reported unilateral tinnitus were compared to subjects with matching hearing loss at high frequencies and to normal-hearing subjects in horizontal and vertical plane localization tasks. Subjects were asked to localize a pink noise source either alone or over background noise. Results showed some degree of difference between subjects with tinnitus and subjects with normal hearing in horizontal plane localization, which was exacerbated by background noise. However, this difference could be explained by different hearing sensitivities between groups. In vertical plane localization there was no difference between groups in the binaural listening condition, but in monaural listening the tinnitus group localized significantly worse with the tinnitus ear. This effect remained when accounting for differences in hearing sensitivity. It is concluded that tinnitus may degrade auditory localization ability, but this effect is for the most part due to the associated levels of hearing loss. More detailed studies are needed to fully disentangle the effects of hearing loss and tinnitus.
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Hyvärinen , P , Macedo Mendonca Hiipakka , C , Santala , O , Pulkki , V & Aarnisalo , A A 2016 , ' Auditory localization by subjects with unilateral tinnitus ' , Journal of the Acoustical Society of America , vol. 139 , no. 5 , pp. 2280-2289 . https://doi.org/10.1121/1.4946897