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The time course of salience: not entirely caused by salience

Visual salience is a key component of attentional selection, the process that guards the scarce resources needed for conscious recognition and perception. In previous works, we proposed a measure of visual salience based on a formal theory of visual selection. However, the strength of visual salienc...

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Autores principales: Krüger, Alexander, Scharlau, Ingrid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8821086/
https://www.ncbi.nlm.nih.gov/pubmed/33599818
http://dx.doi.org/10.1007/s00426-020-01470-6
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author Krüger, Alexander
Scharlau, Ingrid
author_facet Krüger, Alexander
Scharlau, Ingrid
author_sort Krüger, Alexander
collection PubMed
description Visual salience is a key component of attentional selection, the process that guards the scarce resources needed for conscious recognition and perception. In previous works, we proposed a measure of visual salience based on a formal theory of visual selection. However, the strength of visual salience depends on the time course as well as local physical contrasts. Evidence from multiple experimental designs in the literature suggests that the strength of salience rises initially and declines after approximately 150 ms. The present article amends the theory-based salience measure beyond local physical contrasts to the time course of salience. It does so through a first experiment which reveals that—contrary to expectations—salience is not reduced during the first 150 ms after onset. Instead, the overall visual processing capacity is severely reduced, which corresponds to a reduced processing speed of all stimuli in the visual field. A second experiment confirms this conclusion by replicating the result. We argue that the slower stimulus processing may have been overlooked previously because the attentional selection mechanism had not yet been modeled in studies on the time course of salience.
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spelling pubmed-88210862022-02-23 The time course of salience: not entirely caused by salience Krüger, Alexander Scharlau, Ingrid Psychol Res Original Article Visual salience is a key component of attentional selection, the process that guards the scarce resources needed for conscious recognition and perception. In previous works, we proposed a measure of visual salience based on a formal theory of visual selection. However, the strength of visual salience depends on the time course as well as local physical contrasts. Evidence from multiple experimental designs in the literature suggests that the strength of salience rises initially and declines after approximately 150 ms. The present article amends the theory-based salience measure beyond local physical contrasts to the time course of salience. It does so through a first experiment which reveals that—contrary to expectations—salience is not reduced during the first 150 ms after onset. Instead, the overall visual processing capacity is severely reduced, which corresponds to a reduced processing speed of all stimuli in the visual field. A second experiment confirms this conclusion by replicating the result. We argue that the slower stimulus processing may have been overlooked previously because the attentional selection mechanism had not yet been modeled in studies on the time course of salience. Springer Berlin Heidelberg 2021-02-18 2022 /pmc/articles/PMC8821086/ /pubmed/33599818 http://dx.doi.org/10.1007/s00426-020-01470-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Krüger, Alexander
Scharlau, Ingrid
The time course of salience: not entirely caused by salience
title The time course of salience: not entirely caused by salience
title_full The time course of salience: not entirely caused by salience
title_fullStr The time course of salience: not entirely caused by salience
title_full_unstemmed The time course of salience: not entirely caused by salience
title_short The time course of salience: not entirely caused by salience
title_sort time course of salience: not entirely caused by salience
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8821086/
https://www.ncbi.nlm.nih.gov/pubmed/33599818
http://dx.doi.org/10.1007/s00426-020-01470-6
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