Influence of rhythmic grouping on duration perception: a novel auditory illusion.

This study investigated a potential auditory illusion in duration perception induced by rhythmic temporal contexts. Listeners with or without musical training performed a duration discrimination task for a silent period in a rhythmic auditory sequence. The critical temporal interval was presented ei...

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Main Authors: Eveline Geiser, John D E Gabrieli
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3548840?pdf=render
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author Eveline Geiser
John D E Gabrieli
author_facet Eveline Geiser
John D E Gabrieli
author_sort Eveline Geiser
collection DOAJ
description This study investigated a potential auditory illusion in duration perception induced by rhythmic temporal contexts. Listeners with or without musical training performed a duration discrimination task for a silent period in a rhythmic auditory sequence. The critical temporal interval was presented either within a perceptual group or between two perceptual groups. We report the just-noticeable difference (difference limen, DL) for temporal intervals and the point of subjective equality (PSE) derived from individual psychometric functions based on performance of a two-alternative forced choice task. In musically untrained individuals, equal temporal intervals were perceived as significantly longer when presented between perceptual groups than within a perceptual group (109.25% versus 102.5% of the standard duration). Only the perceived duration of the between-group interval was significantly longer than its objective duration. Musically trained individuals did not show this effect. However, in both musically trained and untrained individuals, the relative difference limens for discriminating the comparison interval from the standard interval were larger in the between-groups condition than in the within-group condition (7.3% vs. 5.6% of the standard duration). Thus, rhythmic grouping affected sensitivity to duration changes in all listeners, with duration differences being harder to detect at boundaries of rhythm groups than within rhythm groups. Our results show for the first time that temporal Gestalt induces auditory duration illusions in typical listeners, but that musical experts are not susceptible to this effect of rhythmic grouping.
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spelling doaj.art-b8c15f3d90614576a5c12ebf0123e5042022-12-22T01:27:50ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0181e5427310.1371/journal.pone.0054273Influence of rhythmic grouping on duration perception: a novel auditory illusion.Eveline GeiserJohn D E GabrieliThis study investigated a potential auditory illusion in duration perception induced by rhythmic temporal contexts. Listeners with or without musical training performed a duration discrimination task for a silent period in a rhythmic auditory sequence. The critical temporal interval was presented either within a perceptual group or between two perceptual groups. We report the just-noticeable difference (difference limen, DL) for temporal intervals and the point of subjective equality (PSE) derived from individual psychometric functions based on performance of a two-alternative forced choice task. In musically untrained individuals, equal temporal intervals were perceived as significantly longer when presented between perceptual groups than within a perceptual group (109.25% versus 102.5% of the standard duration). Only the perceived duration of the between-group interval was significantly longer than its objective duration. Musically trained individuals did not show this effect. However, in both musically trained and untrained individuals, the relative difference limens for discriminating the comparison interval from the standard interval were larger in the between-groups condition than in the within-group condition (7.3% vs. 5.6% of the standard duration). Thus, rhythmic grouping affected sensitivity to duration changes in all listeners, with duration differences being harder to detect at boundaries of rhythm groups than within rhythm groups. Our results show for the first time that temporal Gestalt induces auditory duration illusions in typical listeners, but that musical experts are not susceptible to this effect of rhythmic grouping.http://europepmc.org/articles/PMC3548840?pdf=render
spellingShingle Eveline Geiser
John D E Gabrieli
Influence of rhythmic grouping on duration perception: a novel auditory illusion.
PLoS ONE
title Influence of rhythmic grouping on duration perception: a novel auditory illusion.
title_full Influence of rhythmic grouping on duration perception: a novel auditory illusion.
title_fullStr Influence of rhythmic grouping on duration perception: a novel auditory illusion.
title_full_unstemmed Influence of rhythmic grouping on duration perception: a novel auditory illusion.
title_short Influence of rhythmic grouping on duration perception: a novel auditory illusion.
title_sort influence of rhythmic grouping on duration perception a novel auditory illusion
url http://europepmc.org/articles/PMC3548840?pdf=render
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AT johndegabrieli influenceofrhythmicgroupingondurationperceptionanovelauditoryillusion