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| Research article summary (published 30 Jul 2009): |
Evaluation of an imputed pitch velocity model of the auditory tau effect.
Full Abstract
This article extends an imputed pitch velocity model of the auditory kappa effect proposed by Henry and McAuley (2009a) to the auditory tau effect. Two experiments were conducted using an AXB design in which listeners judged the relative pitch of a middle target tone (X) in ascending and descending three-tone sequences. In Experiment 1, sequences were isochronous, establishing constant fast, medium, and slow velocity conditions. No systematic distortions in perceived target pitch were observed, and thresholds were similar across velocity conditions. Experiment 2 introduced to-be-ignored variations in target timing. Variations in target timing that deviated from constant velocity conditions introduced systematic distortions in perceived target pitch, indicative of a robust auditory tau effect. Consistent with an auditory motion hypothesis, the magnitude of the tau effect was larger at faster velocities. In addition, the tau effect was generally stronger for descending sequences than for ascending sequences. Combined with previous work on the auditory kappa effect, the imputed velocity model and associated auditory motion hypothesis provide a unified quantitative account of both auditory tau and kappa effects. In broader terms, these findings add support to the view that pitch and time relations in auditory patterns are fundamentally interdependent.
Author information
Author/s: Henry, Molly J (MJ); McAuley, J Devin (JD); Zaleha, Marta (M);
Affiliation: Bowling Green State University, Bowling Green, Ohio, USA.
Journal and publication information
Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.
Journal: Attention, perception & psychophysics (Atten Percept Psychophys), published in United States. (Language: eng)
Reference: 2009-Aug; vol 71 (issue 6) : pp 1399-413
Dates: Created 2009/07/27; Completed 2009/10/20;
PMID: 19633354, status: MEDLINE (last retrieval date: 10/20/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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