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Shared neural representations and temporal segmentation of political content predict ideological similarity

Despite receiving the same sensory input, opposing partisans often interpret political content in disparate ways. Jointly analyzing controlled and naturalistic functional magnetic resonance imaging data, we uncover the neurobiological mechanisms explaining how these divergent political viewpoints ar...

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Detalles Bibliográficos
Autores principales: de Bruin, Daantje, van Baar, Jeroen M., Rodríguez, Pedro L., FeldmanHall, Oriel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9891706/
https://www.ncbi.nlm.nih.gov/pubmed/36724226
http://dx.doi.org/10.1126/sciadv.abq5920
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author de Bruin, Daantje
van Baar, Jeroen M.
Rodríguez, Pedro L.
FeldmanHall, Oriel
author_facet de Bruin, Daantje
van Baar, Jeroen M.
Rodríguez, Pedro L.
FeldmanHall, Oriel
author_sort de Bruin, Daantje
collection PubMed
description Despite receiving the same sensory input, opposing partisans often interpret political content in disparate ways. Jointly analyzing controlled and naturalistic functional magnetic resonance imaging data, we uncover the neurobiological mechanisms explaining how these divergent political viewpoints arise. Individuals who share an ideology have more similar neural representations of political words, experience greater neural synchrony during naturalistic political content, and temporally segment real-world information into the same meaningful units. In the striatum and amygdala, increasing intersubject similarity in neural representations of political concepts during a word reading task predicts enhanced synchronization of blood oxygen level–dependent time courses when viewing real-time, inflammatory political videos, revealing that polarization can arise from differences in the brain’s affective valuations of political concepts. Together, this research shows that political ideology is shaped by semantic representations of political concepts processed in an environment free of any polarizing agenda and that these representations bias how real-world political information is construed into a polarized perspective.
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spelling pubmed-98917062023-02-08 Shared neural representations and temporal segmentation of political content predict ideological similarity de Bruin, Daantje van Baar, Jeroen M. Rodríguez, Pedro L. FeldmanHall, Oriel Sci Adv Neuroscience Despite receiving the same sensory input, opposing partisans often interpret political content in disparate ways. Jointly analyzing controlled and naturalistic functional magnetic resonance imaging data, we uncover the neurobiological mechanisms explaining how these divergent political viewpoints arise. Individuals who share an ideology have more similar neural representations of political words, experience greater neural synchrony during naturalistic political content, and temporally segment real-world information into the same meaningful units. In the striatum and amygdala, increasing intersubject similarity in neural representations of political concepts during a word reading task predicts enhanced synchronization of blood oxygen level–dependent time courses when viewing real-time, inflammatory political videos, revealing that polarization can arise from differences in the brain’s affective valuations of political concepts. Together, this research shows that political ideology is shaped by semantic representations of political concepts processed in an environment free of any polarizing agenda and that these representations bias how real-world political information is construed into a polarized perspective. American Association for the Advancement of Science 2023-02-01 /pmc/articles/PMC9891706/ /pubmed/36724226 http://dx.doi.org/10.1126/sciadv.abq5920 Text en Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Neuroscience
de Bruin, Daantje
van Baar, Jeroen M.
Rodríguez, Pedro L.
FeldmanHall, Oriel
Shared neural representations and temporal segmentation of political content predict ideological similarity
title Shared neural representations and temporal segmentation of political content predict ideological similarity
title_full Shared neural representations and temporal segmentation of political content predict ideological similarity
title_fullStr Shared neural representations and temporal segmentation of political content predict ideological similarity
title_full_unstemmed Shared neural representations and temporal segmentation of political content predict ideological similarity
title_short Shared neural representations and temporal segmentation of political content predict ideological similarity
title_sort shared neural representations and temporal segmentation of political content predict ideological similarity
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9891706/
https://www.ncbi.nlm.nih.gov/pubmed/36724226
http://dx.doi.org/10.1126/sciadv.abq5920
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