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Evidence of target enhancement and distractor suppression in early visual areas
Although the mechanisms of target enhancement and distractor suppression have been investigated along the visual processing hierarchy, there remains some unknown as to the role of perceptual load on the competition between different task-related information as attention deployment is manipulated. We...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10066080/ https://www.ncbi.nlm.nih.gov/pubmed/36918513 http://dx.doi.org/10.3758/s13414-023-02673-w |
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author | Föcker, Julia Beer, Anton L. Bavelier, Daphne |
author_facet | Föcker, Julia Beer, Anton L. Bavelier, Daphne |
author_sort | Föcker, Julia |
collection | PubMed |
description | Although the mechanisms of target enhancement and distractor suppression have been investigated along the visual processing hierarchy, there remains some unknown as to the role of perceptual load on the competition between different task-related information as attention deployment is manipulated. We present an fMRI spatial cueing paradigm, in which 32 participants had to attend to either a left or a right hemifield location and to indicate the orientation of the target Gabor that was presented simultaneously to a noise patch distractor. Critically, the target could appear at either the cued, valid location or at the uncued, invalid location; in the latter, the noise patch distractor appeared at the cued location. Perceptual load was manipulated by the presence or absence of high-contrast Gabor patches close to the fixation cross, which acted as lateral masks. Behavioural results indicated that participants performed more efficiently in validly cued trials compared to invalidly cued trials and under low compared to high load. Enhancement effects for targets and suppression effects for noise patches were greater in early visual areas at high load, that is in the presence of lateral masks. These results are in line with the hypothesis that attention results in both target enhancement and distractor suppression, and that these effects are most marked under high perceptual load. Theoretical implications of these results for different models of attention are discussed. |
format | Online Article Text |
id | pubmed-10066080 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-100660802023-04-02 Evidence of target enhancement and distractor suppression in early visual areas Föcker, Julia Beer, Anton L. Bavelier, Daphne Atten Percept Psychophys Article Although the mechanisms of target enhancement and distractor suppression have been investigated along the visual processing hierarchy, there remains some unknown as to the role of perceptual load on the competition between different task-related information as attention deployment is manipulated. We present an fMRI spatial cueing paradigm, in which 32 participants had to attend to either a left or a right hemifield location and to indicate the orientation of the target Gabor that was presented simultaneously to a noise patch distractor. Critically, the target could appear at either the cued, valid location or at the uncued, invalid location; in the latter, the noise patch distractor appeared at the cued location. Perceptual load was manipulated by the presence or absence of high-contrast Gabor patches close to the fixation cross, which acted as lateral masks. Behavioural results indicated that participants performed more efficiently in validly cued trials compared to invalidly cued trials and under low compared to high load. Enhancement effects for targets and suppression effects for noise patches were greater in early visual areas at high load, that is in the presence of lateral masks. These results are in line with the hypothesis that attention results in both target enhancement and distractor suppression, and that these effects are most marked under high perceptual load. Theoretical implications of these results for different models of attention are discussed. Springer US 2023-03-14 2023 /pmc/articles/PMC10066080/ /pubmed/36918513 http://dx.doi.org/10.3758/s13414-023-02673-w Text en © The Author(s) 2023 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 | Article Föcker, Julia Beer, Anton L. Bavelier, Daphne Evidence of target enhancement and distractor suppression in early visual areas |
title | Evidence of target enhancement and distractor suppression in early visual areas |
title_full | Evidence of target enhancement and distractor suppression in early visual areas |
title_fullStr | Evidence of target enhancement and distractor suppression in early visual areas |
title_full_unstemmed | Evidence of target enhancement and distractor suppression in early visual areas |
title_short | Evidence of target enhancement and distractor suppression in early visual areas |
title_sort | evidence of target enhancement and distractor suppression in early visual areas |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10066080/ https://www.ncbi.nlm.nih.gov/pubmed/36918513 http://dx.doi.org/10.3758/s13414-023-02673-w |
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