Relative contribution of pitch and brightness to the auditory kappa effect
Psychological Research. 2019-08-22; 85(1): 55-67
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1. Psychol Res. 2021 Feb;85(1):55-67. doi: 10.1007/s00426-019-01233-y. Epub 2019
Relative contribution of pitch and brightness to the auditory kappa effect.
Marty N(1)(2), Marty M(3), Pfeuty M(4).
(1)Sorbonne University, 75000, Paris, France.
(2)University of Bourgogne Franche-Comté, LEAD, UMR 5022, CNRS, 21000, Dijon,
(3)University of Bordeaux, INCIA, UMR 5287, CNRS, 146 rue Leo Saignat, 33076,
(4)University of Bordeaux, INCIA, UMR 5287, CNRS, 146 rue Leo Saignat, 33076,
Bordeaux, France. .
Pitch height is known to interfere with temporal judgment. This is the case in
the auditory kappa effect in which the relative degree of pitch distance
separating two tones extends the perceived duration of the inter-onset interval
(IOI). However, pitch variations which result from manipulations of the
fundamental frequency of tones are associated with variations of the spectral
centroid, which is related to the perceived brightness. The present study aimed
at determining the relative contribution of pitch and brightness to the auditory
kappa effect. Forty-eight participants performed an AXB paradigm (tone X was
shifted to be closer to either tone A or B) in three conditions: the three tones
varied in both pitch and brightness (PB condition), pitch varied but brightness
was fixed (P condition) or brightness varied but pitch was fixed (B condition).
Pitch and brightness were modified by manipulating the fundamental frequency
(F0) and the spectral centroid of the tones, respectively. In each condition,
the percentage of trials in which the first IOI was perceived as shorter
increased as X was closer (in pitch and/or brightness) to A. Furthermore, the
magnitude of the effect was larger in PB than in P condition, while it did not
differ between PB and B conditions, suggesting that brightness would contribute
more than pitch height to the auditory kappa effect. This study provides the
first evidence that auditory brightness interferes with duration judgment and
highlights the importance to consider jointly the role of pitch height and
brightness in future studies on auditory temporal processing.
PMID: 31440814 [Indexed for MEDLINE]