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| Research article summary (published 30 Dec 2002): |
A comparison of the contrast effects in sound localization in the horizontal and vertical planes.
Full Abstract
The effect of a background sound on the auditory localization of a single sound source was examined. Nine loudspeakers were arranged crosswise in the horizontal and the median vertical plane. They ranged from -20 degrees to +20 degrees, with the center loudspeaker at 0 degree azimuth and elevation. Using vertical and horizontal centimeter scales, listeners verbally estimated the position of a 500-ms broadband noise stimulus being presented at the same time as a 2 s background sound, emitted by one of the four outer loudspeakers. When the background sound consisted of continuous broadband noise, listeners consistently shifted the apparent target positions away from the background sound locations. This auditory contrast effect, which is consistent with earlier findings, equally occurred in both planes. But when the background sound was changed to a pulse train of noise bursts, the contrast effect decreased in the horizontal plane and increased in the vertical plane. This discrepancy might be due to general differences in the processing of interaural and spectral localization information.
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Author information
Author/s: Getzmann, Stephan (S);
Affiliation: Faculty of Psychology, Ruhr University Bochum, D-44780 Bochum, Germany. Stephan.Getzmann(-atsign-)ruhr-uni-bochum.de
Journal and publication information
Publication Type: Journal Article
Journal: Experimental psychology (Exp Psychol), published in Germany. (Language: eng)
Reference: 2003-; vol 50 (issue 2) : pp 131-41
Dates: Created 2003/04/15; Completed 2003/07/03; Revised 2004/11/17;
PMID: 12693198, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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