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Some characteristics of auditory spatial attention revealed using rhythmic masking release

Sach, A.J. and Bailey, P.J. (2004) Some characteristics of auditory spatial attention revealed using rhythmic masking release. Perception and Psychophysics, 66 (8). pp. 1379-1387. ISSN 0031-5117

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The tuning of auditory spatial attention with respect to interaural level and time difference cues (ILDs and ITDs) was explored using a rhythmic masking release (RMR) procedure. Listeners heard tone sequences defining one of two simple target rhythms, interleaved with arhythmic masking tones, presented over headphones. There were two conditions, which differed only in the ILD of the tones defining the target rhythm: For one condition, ILD was 0 dB and the perceived lateral position was central, and for the other, ILD was 4 dB and the perceived lateral position was to the right; target tone ITD was always zero. For the masking tones, ILD was fixed at 0 dB and ITDs were varied, giving rise to a range of lateral positions determined by ITD. The listeners' task was to attend to and identify the target rhythm. The data showed that target rhythm identification accuracy was low, indicating that maskers were effective, when target and masker shared spatial position, but not when they shared only ITD. A clear implication is that at least within the constraints of the RMR paradigm, overall spatial position, and not ITD, is the substrate for auditory spatial attention.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Psychology (York)
Depositing User: York RAE Import
Date Deposited: 07 Apr 2009 11:18
Last Modified: 07 Apr 2009 11:18
Published Version: http://app.psychonomic-journals.org/content/66/8/1...
Status: Published
Publisher: Psychonomic Society
URI: http://eprints.whiterose.ac.uk/id/eprint/7174

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