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Limitations of concurrently representing objects within view and in visual working memory
Representing visibly present stimuli is as limited in capacity as representing invisible stimuli in visual working memory (WM). In this study, we explored whether concurrently representing stimuli within view affects representing objects in visual WM, and if so, whether this effect is modulated by t...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7093397/ https://www.ncbi.nlm.nih.gov/pubmed/32210299 http://dx.doi.org/10.1038/s41598-020-62164-y |
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author | Liang, Tengfei Cheng, Zijian Hu, Wenjing Ye, Chaoxiong Zhang, Jiafeng Liu, Qiang |
author_facet | Liang, Tengfei Cheng, Zijian Hu, Wenjing Ye, Chaoxiong Zhang, Jiafeng Liu, Qiang |
author_sort | Liang, Tengfei |
collection | PubMed |
description | Representing visibly present stimuli is as limited in capacity as representing invisible stimuli in visual working memory (WM). In this study, we explored whether concurrently representing stimuli within view affects representing objects in visual WM, and if so, whether this effect is modulated by the storage states (active and silent state) of memory contents? In experiment 1, participants were asked to perform the change-detect task in a simultaneous-representing condition in which WM content and the continuously-visible stimuli in view were simultaneously represented, as well as a baseline condition in which only the representations of visual WM content were maintained. The results showed that the representations in visual WM would be impaired when the continuously-visible stimuli in view were concurrently represented, revealed by the reduced CDA amplitude and the lower behavior performance. In experiment 2, a dual-serial retro-cue paradigm was adopted to guide participants to maintain memory items in two different storage states, and the results revealed that simultaneously representing the continuously-visible stimuli and the WM content would only impair the WM representations in the active state. These evidences demonstrated that only the visual WM representations that were maintained in the active state would definitely share the limited resources with the representations of continuously-visible information, and further supported the dissociation between the active state and silent state of visual WM storage. |
format | Online Article Text |
id | pubmed-7093397 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-70933972020-03-27 Limitations of concurrently representing objects within view and in visual working memory Liang, Tengfei Cheng, Zijian Hu, Wenjing Ye, Chaoxiong Zhang, Jiafeng Liu, Qiang Sci Rep Article Representing visibly present stimuli is as limited in capacity as representing invisible stimuli in visual working memory (WM). In this study, we explored whether concurrently representing stimuli within view affects representing objects in visual WM, and if so, whether this effect is modulated by the storage states (active and silent state) of memory contents? In experiment 1, participants were asked to perform the change-detect task in a simultaneous-representing condition in which WM content and the continuously-visible stimuli in view were simultaneously represented, as well as a baseline condition in which only the representations of visual WM content were maintained. The results showed that the representations in visual WM would be impaired when the continuously-visible stimuli in view were concurrently represented, revealed by the reduced CDA amplitude and the lower behavior performance. In experiment 2, a dual-serial retro-cue paradigm was adopted to guide participants to maintain memory items in two different storage states, and the results revealed that simultaneously representing the continuously-visible stimuli and the WM content would only impair the WM representations in the active state. These evidences demonstrated that only the visual WM representations that were maintained in the active state would definitely share the limited resources with the representations of continuously-visible information, and further supported the dissociation between the active state and silent state of visual WM storage. Nature Publishing Group UK 2020-03-24 /pmc/articles/PMC7093397/ /pubmed/32210299 http://dx.doi.org/10.1038/s41598-020-62164-y Text en © The Author(s) 2020 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Liang, Tengfei Cheng, Zijian Hu, Wenjing Ye, Chaoxiong Zhang, Jiafeng Liu, Qiang Limitations of concurrently representing objects within view and in visual working memory |
title | Limitations of concurrently representing objects within view and in visual working memory |
title_full | Limitations of concurrently representing objects within view and in visual working memory |
title_fullStr | Limitations of concurrently representing objects within view and in visual working memory |
title_full_unstemmed | Limitations of concurrently representing objects within view and in visual working memory |
title_short | Limitations of concurrently representing objects within view and in visual working memory |
title_sort | limitations of concurrently representing objects within view and in visual working memory |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7093397/ https://www.ncbi.nlm.nih.gov/pubmed/32210299 http://dx.doi.org/10.1038/s41598-020-62164-y |
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