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The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements
The counting process can only be fully understood when taking into account the visual characteristics of the sets counted. Comparing behavioral data as well as event-related brain potentials (ERPs) evoked by different task-irrelevant arrangements of dots during an exact enumeration task, we aimed to...
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/PMC9042952/ https://www.ncbi.nlm.nih.gov/pubmed/35474225 http://dx.doi.org/10.1038/s41598-022-10206-y |
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author | Akbari, Shadi Soltanlou, Mojtaba Sabourimoghaddam, Hassan Nuerk, Hans-Christoph Leuthold, Hartmut |
author_facet | Akbari, Shadi Soltanlou, Mojtaba Sabourimoghaddam, Hassan Nuerk, Hans-Christoph Leuthold, Hartmut |
author_sort | Akbari, Shadi |
collection | PubMed |
description | The counting process can only be fully understood when taking into account the visual characteristics of the sets counted. Comparing behavioral data as well as event-related brain potentials (ERPs) evoked by different task-irrelevant arrangements of dots during an exact enumeration task, we aimed to investigate the effect of illusory contour detection on the counting process while other grouping cues like proximity were controlled and dot sparsity did not provide a cue to the numerosity of sets. Adult participants (N = 37) enumerated dots (8–12) in irregular and two different types of regular arrangements which differed in the shape of their illusory dot lattices. Enumeration speed was affected by both arrangement and magnitude. The type of arrangement influenced an early ERP negativity peaking at about 270 ms after stimulus onset, whereas numerosity only affected later ERP components (> 300 ms). We also observed that without perceptual cues, magnitude was constructed at a later stage of cognitive processing. We suggest that chunking is a prerequisite for more fluent counting which influences automatic processing (< 300 ms) during enumeration. We conclude that the procedure of exact enumeration depends on the interaction of several perceptual and numerical processes that are influenced by magnitude and arrangement. |
format | Online Article Text |
id | pubmed-9042952 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-90429522022-04-28 The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements Akbari, Shadi Soltanlou, Mojtaba Sabourimoghaddam, Hassan Nuerk, Hans-Christoph Leuthold, Hartmut Sci Rep Article The counting process can only be fully understood when taking into account the visual characteristics of the sets counted. Comparing behavioral data as well as event-related brain potentials (ERPs) evoked by different task-irrelevant arrangements of dots during an exact enumeration task, we aimed to investigate the effect of illusory contour detection on the counting process while other grouping cues like proximity were controlled and dot sparsity did not provide a cue to the numerosity of sets. Adult participants (N = 37) enumerated dots (8–12) in irregular and two different types of regular arrangements which differed in the shape of their illusory dot lattices. Enumeration speed was affected by both arrangement and magnitude. The type of arrangement influenced an early ERP negativity peaking at about 270 ms after stimulus onset, whereas numerosity only affected later ERP components (> 300 ms). We also observed that without perceptual cues, magnitude was constructed at a later stage of cognitive processing. We suggest that chunking is a prerequisite for more fluent counting which influences automatic processing (< 300 ms) during enumeration. We conclude that the procedure of exact enumeration depends on the interaction of several perceptual and numerical processes that are influenced by magnitude and arrangement. Nature Publishing Group UK 2022-04-26 /pmc/articles/PMC9042952/ /pubmed/35474225 http://dx.doi.org/10.1038/s41598-022-10206-y 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 Akbari, Shadi Soltanlou, Mojtaba Sabourimoghaddam, Hassan Nuerk, Hans-Christoph Leuthold, Hartmut The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title | The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title_full | The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title_fullStr | The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title_full_unstemmed | The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title_short | The complexity of simple counting: ERP findings reveal early perceptual and late numerical processes in different arrangements |
title_sort | complexity of simple counting: erp findings reveal early perceptual and late numerical processes in different arrangements |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9042952/ https://www.ncbi.nlm.nih.gov/pubmed/35474225 http://dx.doi.org/10.1038/s41598-022-10206-y |
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