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Dynamics of neural representations when searching for exemplars and categories of human and non-human faces
Face perception abilities in humans exhibit a marked expertise in distinguishing individual human faces at the expense of individual faces from other species (the other-species effect). In particular, one behavioural effect of such specialization is that human adults search for and find categories o...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6125483/ https://www.ncbi.nlm.nih.gov/pubmed/30185919 http://dx.doi.org/10.1038/s41598-018-31526-y |
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author | Bayet, Laurie Zinszer, Benjamin Pruitt, Zoe Aslin, Richard N. Wu, Rachel |
author_facet | Bayet, Laurie Zinszer, Benjamin Pruitt, Zoe Aslin, Richard N. Wu, Rachel |
author_sort | Bayet, Laurie |
collection | PubMed |
description | Face perception abilities in humans exhibit a marked expertise in distinguishing individual human faces at the expense of individual faces from other species (the other-species effect). In particular, one behavioural effect of such specialization is that human adults search for and find categories of non-human faces faster and more accurately than a specific non-human face, and vice versa for human faces. However, a recent visual search study showed that neural responses (event-related potentials, ERPs) were identical when finding either a non-human or human face. We used time-resolved multivariate pattern analysis of the EEG data from that study to investigate the dynamics of neural representations during a visual search for own-species (human) or other-species (non-human ape) faces, with greater sensitivity than traditional ERP analyses. The location of each target (i.e., right or left) could be decoded from the EEG, with similar accuracy for human and non-human faces. However, the neural patterns associated with searching for an exemplar versus a category target differed for human faces compared to non-human faces: Exemplar representations could be more reliably distinguished from category representations for human than non-human faces. These findings suggest that the other-species effect modulates the nature of representations, but preserves the attentional selection of target items based on these representations. |
format | Online Article Text |
id | pubmed-6125483 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61254832018-09-10 Dynamics of neural representations when searching for exemplars and categories of human and non-human faces Bayet, Laurie Zinszer, Benjamin Pruitt, Zoe Aslin, Richard N. Wu, Rachel Sci Rep Article Face perception abilities in humans exhibit a marked expertise in distinguishing individual human faces at the expense of individual faces from other species (the other-species effect). In particular, one behavioural effect of such specialization is that human adults search for and find categories of non-human faces faster and more accurately than a specific non-human face, and vice versa for human faces. However, a recent visual search study showed that neural responses (event-related potentials, ERPs) were identical when finding either a non-human or human face. We used time-resolved multivariate pattern analysis of the EEG data from that study to investigate the dynamics of neural representations during a visual search for own-species (human) or other-species (non-human ape) faces, with greater sensitivity than traditional ERP analyses. The location of each target (i.e., right or left) could be decoded from the EEG, with similar accuracy for human and non-human faces. However, the neural patterns associated with searching for an exemplar versus a category target differed for human faces compared to non-human faces: Exemplar representations could be more reliably distinguished from category representations for human than non-human faces. These findings suggest that the other-species effect modulates the nature of representations, but preserves the attentional selection of target items based on these representations. Nature Publishing Group UK 2018-09-05 /pmc/articles/PMC6125483/ /pubmed/30185919 http://dx.doi.org/10.1038/s41598-018-31526-y Text en © The Author(s) 2018 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 Bayet, Laurie Zinszer, Benjamin Pruitt, Zoe Aslin, Richard N. Wu, Rachel Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title | Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title_full | Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title_fullStr | Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title_full_unstemmed | Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title_short | Dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
title_sort | dynamics of neural representations when searching for exemplars and categories of human and non-human faces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6125483/ https://www.ncbi.nlm.nih.gov/pubmed/30185919 http://dx.doi.org/10.1038/s41598-018-31526-y |
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