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The spatial representation of loudness in a timbre discrimination task

When participants decide whether a presented tone is loud or soft they react faster to loud tones with a top-sided response key in comparison to a bottom-sided response key and vice versa for soft tones. This effect is comparable to the well-established horizontal Spatial-Numerical Association of Re...

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Autores principales: Koch, Sarah, Schubert, Torsten, Blankenberger, Sven
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652803/
https://www.ncbi.nlm.nih.gov/pubmed/38025962
http://dx.doi.org/10.1177/20416695231213213
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author Koch, Sarah
Schubert, Torsten
Blankenberger, Sven
author_facet Koch, Sarah
Schubert, Torsten
Blankenberger, Sven
author_sort Koch, Sarah
collection PubMed
description When participants decide whether a presented tone is loud or soft they react faster to loud tones with a top-sided response key in comparison to a bottom-sided response key and vice versa for soft tones. This effect is comparable to the well-established horizontal Spatial-Numerical Association of Response Codes (SNARC) effect and is often referred to as Spatial-Musical Association of Response Codes (SMARC) effect for loudness. The SMARC effect for loudness is typically explained by the assumption of a spatial representation or by the polarity correspondence principle. Crucially, both theories differ in the prediction of the SMARC effect when loudness is task-irrelevant. Therefore, we investigated whether the SMARC effect still occurs in a timbre discrimination task: Participants (N = 36) heard a single tone and classified its timbre with vertically arranged response keys. Additionally, the tone's loudness level varied in six levels. In case of a spatial representation, the SMARC effect should still occur while in case of polarity corresponding principle, the effect should be absent. Results showed that the SMARC effect was still present and that the differences between top-sided and bottom-sided responses were a linear function of loudness level indicating a continuous spatial representation of loudness.
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spelling pubmed-106528032023-11-14 The spatial representation of loudness in a timbre discrimination task Koch, Sarah Schubert, Torsten Blankenberger, Sven Iperception Standard Article When participants decide whether a presented tone is loud or soft they react faster to loud tones with a top-sided response key in comparison to a bottom-sided response key and vice versa for soft tones. This effect is comparable to the well-established horizontal Spatial-Numerical Association of Response Codes (SNARC) effect and is often referred to as Spatial-Musical Association of Response Codes (SMARC) effect for loudness. The SMARC effect for loudness is typically explained by the assumption of a spatial representation or by the polarity correspondence principle. Crucially, both theories differ in the prediction of the SMARC effect when loudness is task-irrelevant. Therefore, we investigated whether the SMARC effect still occurs in a timbre discrimination task: Participants (N = 36) heard a single tone and classified its timbre with vertically arranged response keys. Additionally, the tone's loudness level varied in six levels. In case of a spatial representation, the SMARC effect should still occur while in case of polarity corresponding principle, the effect should be absent. Results showed that the SMARC effect was still present and that the differences between top-sided and bottom-sided responses were a linear function of loudness level indicating a continuous spatial representation of loudness. SAGE Publications 2023-11-14 /pmc/articles/PMC10652803/ /pubmed/38025962 http://dx.doi.org/10.1177/20416695231213213 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Standard Article
Koch, Sarah
Schubert, Torsten
Blankenberger, Sven
The spatial representation of loudness in a timbre discrimination task
title The spatial representation of loudness in a timbre discrimination task
title_full The spatial representation of loudness in a timbre discrimination task
title_fullStr The spatial representation of loudness in a timbre discrimination task
title_full_unstemmed The spatial representation of loudness in a timbre discrimination task
title_short The spatial representation of loudness in a timbre discrimination task
title_sort spatial representation of loudness in a timbre discrimination task
topic Standard Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652803/
https://www.ncbi.nlm.nih.gov/pubmed/38025962
http://dx.doi.org/10.1177/20416695231213213
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