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Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain
Humans’ symbolic counting skills are built on a primordial ability to approximately estimate the number of items, or numerosity. To date it is debated whether numerosities presented in categorically different formats, that is as temporal sequences versus spatial arrays, are represented abstractly in...
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/PMC7000399/ https://www.ncbi.nlm.nih.gov/pubmed/32019934 http://dx.doi.org/10.1038/s41467-020-14519-2 |
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author | Ditz, Helen M. Nieder, Andreas |
author_facet | Ditz, Helen M. Nieder, Andreas |
author_sort | Ditz, Helen M. |
collection | PubMed |
description | Humans’ symbolic counting skills are built on a primordial ability to approximately estimate the number of items, or numerosity. To date it is debated whether numerosities presented in categorically different formats, that is as temporal sequences versus spatial arrays, are represented abstractly in the brain. To address this issue, we identified the behavioral characteristics and neuronal codes for sequential and simultaneous number formats in crows. We find a format-dependent representation by distinct groups of selective neurons during the sensory encoding stage. However, an abstract and format-independent numerosity code emerges once the encoding phase is completed and numerosities needed to be memorized. These results suggest a successive two-stage code for categorically different number formats and help to reconcile conflicting findings observed in psychophysics and brain imaging. |
format | Online Article Text |
id | pubmed-7000399 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-70003992020-02-06 Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain Ditz, Helen M. Nieder, Andreas Nat Commun Article Humans’ symbolic counting skills are built on a primordial ability to approximately estimate the number of items, or numerosity. To date it is debated whether numerosities presented in categorically different formats, that is as temporal sequences versus spatial arrays, are represented abstractly in the brain. To address this issue, we identified the behavioral characteristics and neuronal codes for sequential and simultaneous number formats in crows. We find a format-dependent representation by distinct groups of selective neurons during the sensory encoding stage. However, an abstract and format-independent numerosity code emerges once the encoding phase is completed and numerosities needed to be memorized. These results suggest a successive two-stage code for categorically different number formats and help to reconcile conflicting findings observed in psychophysics and brain imaging. Nature Publishing Group UK 2020-02-04 /pmc/articles/PMC7000399/ /pubmed/32019934 http://dx.doi.org/10.1038/s41467-020-14519-2 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 Ditz, Helen M. Nieder, Andreas Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title | Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title_full | Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title_fullStr | Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title_full_unstemmed | Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title_short | Format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
title_sort | format-dependent and format-independent representation of sequential and simultaneous numerosity in the crow endbrain |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000399/ https://www.ncbi.nlm.nih.gov/pubmed/32019934 http://dx.doi.org/10.1038/s41467-020-14519-2 |
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