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Dynamic compression, spatial Hearing, and cognitive performance
Örebro universitet, Hälsoakademin.
Linköping University, The Swedish Institute for Disability Research. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Technical Audiology. Linköping University, Faculty of Health Sciences.
2010 (English)In: Hearing and deafness from memory to society: ongoing thesis projects / [ed] Magnus Emilsson, 2010Conference paper (Other academic)
Abstract [en]

INTRODUCTION. Spatial hearing outcome of hearing aid fitting might benefit from further knowledge of sound lateralization. Effects from signal processing and cognitive speed on sound lateralization performance have been examined in this study.

METHOD. Sound lateralization performance and cognitive performance were measured in adult participants. They assessed direction of noise pulses presented through earphones. Direction was simulated with interaural level differences with and without interaural time differences. Dynamic compression was set to bypass, independent channels, or linked left and right channels. Cognitive performance was assessed by means of letter matching, lexical or phonological tasks. The mean response time and the number of correct responses were recorded for each test condition.

RESULTS. For sound lateralization accuracy, presence of interaural time differences improved performance. Independent channels dynamic compression reduced lateralization accuracy. For sound lateralization speed, presence of interaural time differences improved performance by 145 ms. The response time for the lateralization tasks correlated more to the letter matching task than the other cognitive tasks.

ADDITIONAL DATA. A preview of data from a follow-up experiment will be presented.

Place, publisher, year, edition, pages
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-63840OAI: diva2:383169
Kolmården, Sweden, June 14–15, 2010
Available from: 2011-01-04 Created: 2011-01-04 Last updated: 2011-02-04

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Lyxell, BjörnLarsby, Birgitta
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The Swedish Institute for Disability ResearchDisability ResearchFaculty of Arts and SciencesTechnical AudiologyFaculty of Health Sciences
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