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Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion
Over the last several years, the study of working memory (WM) for simple visual features (e.g., colors, orientations) has been dominated by perspectives that assume items in WM are stored independently of one another. Evidence has revealed, however, systematic biases in WM recall which suggest that...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9588047/ https://www.ncbi.nlm.nih.gov/pubmed/36272987 http://dx.doi.org/10.1038/s41598-022-22328-4 |
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author | Johnson, Jeffrey S. van Lamsweerde, Amanda E. Dineva, Evelina Spencer, John P. |
author_facet | Johnson, Jeffrey S. van Lamsweerde, Amanda E. Dineva, Evelina Spencer, John P. |
author_sort | Johnson, Jeffrey S. |
collection | PubMed |
description | Over the last several years, the study of working memory (WM) for simple visual features (e.g., colors, orientations) has been dominated by perspectives that assume items in WM are stored independently of one another. Evidence has revealed, however, systematic biases in WM recall which suggest that items in WM interact during active maintenance. In the present study, we report two experiments that replicate a repulsion bias between metrically similar colors during active storage in WM. We also observed that metrically similar colors were stored with lower resolution than a unique color held actively in mind at the same time. To account for these effects, we report quantitative simulations of two novel neurodynamical models of WM. In both models, the unique behavioral signatures reported here emerge directly from laterally-inhibitory neural interactions that serve to maintain multiple, distinct neural representations throughout the WM delay period. Simulation results show that the full pattern of empirical findings was only obtained with a model that included an elaborated spatial pathway with sequential encoding of memory display items. We discuss implications of our findings for theories of visual working memory more generally. |
format | Online Article Text |
id | pubmed-9588047 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-95880472022-10-24 Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion Johnson, Jeffrey S. van Lamsweerde, Amanda E. Dineva, Evelina Spencer, John P. Sci Rep Article Over the last several years, the study of working memory (WM) for simple visual features (e.g., colors, orientations) has been dominated by perspectives that assume items in WM are stored independently of one another. Evidence has revealed, however, systematic biases in WM recall which suggest that items in WM interact during active maintenance. In the present study, we report two experiments that replicate a repulsion bias between metrically similar colors during active storage in WM. We also observed that metrically similar colors were stored with lower resolution than a unique color held actively in mind at the same time. To account for these effects, we report quantitative simulations of two novel neurodynamical models of WM. In both models, the unique behavioral signatures reported here emerge directly from laterally-inhibitory neural interactions that serve to maintain multiple, distinct neural representations throughout the WM delay period. Simulation results show that the full pattern of empirical findings was only obtained with a model that included an elaborated spatial pathway with sequential encoding of memory display items. We discuss implications of our findings for theories of visual working memory more generally. Nature Publishing Group UK 2022-10-22 /pmc/articles/PMC9588047/ /pubmed/36272987 http://dx.doi.org/10.1038/s41598-022-22328-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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 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 Johnson, Jeffrey S. van Lamsweerde, Amanda E. Dineva, Evelina Spencer, John P. Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title | Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title_full | Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title_fullStr | Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title_full_unstemmed | Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title_short | Neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
title_sort | neural interactions in working memory explain decreased recall precision and similarity-based feature repulsion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9588047/ https://www.ncbi.nlm.nih.gov/pubmed/36272987 http://dx.doi.org/10.1038/s41598-022-22328-4 |
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