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Personality traits predict brain activation and connectivity when witnessing a violent conflict

As observers we excel in decoding the emotional signals telling us that a social interaction is turning violent. The neural substrate and its modulation by personality traits remain ill understood. We performed an fMRI experiment in which participants watched videos displaying a violent conflict bet...

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Autores principales: Stock, Jan Van den, Hortensius, Ruud, Sinke, Charlotte, Goebel, Rainer, de Gelder, Beatrice
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4559660/
https://www.ncbi.nlm.nih.gov/pubmed/26337369
http://dx.doi.org/10.1038/srep13779
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author Stock, Jan Van den
Hortensius, Ruud
Sinke, Charlotte
Goebel, Rainer
de Gelder, Beatrice
author_facet Stock, Jan Van den
Hortensius, Ruud
Sinke, Charlotte
Goebel, Rainer
de Gelder, Beatrice
author_sort Stock, Jan Van den
collection PubMed
description As observers we excel in decoding the emotional signals telling us that a social interaction is turning violent. The neural substrate and its modulation by personality traits remain ill understood. We performed an fMRI experiment in which participants watched videos displaying a violent conflict between two people. Observers’ attention was directed to either the aggressor or the victim. Focusing on the aggressor (vs. focusing on the victim) activated the superior temporal sulcus (STS), extra-striate body area (EBA), occipital poles and centro-medial amygdala (CMA). Stronger instantaneous connectivity occurred between these and the EBA, insula, and the red nucleus. When focusing on the victim, basolateral amygdala (BLA) activation was related to trait empathy and showed increased connectivity with the insula and red nucleus. STS activation was associated with trait aggression and increased connectivity with the hypothalamus. The findings reveal that focusing on the aggressor of a violent conflict triggers more activation in categorical (EBA) and emotion (CMA, STS) areas. This is associated with increased instantaneous connectivity among emotion areas (CMA-insula) and between categorical and emotion (EBA-STS) areas. When the focus is on the victim, personality traits (aggression/empathy) modulate activity in emotion areas (respectively STS and postcentral gyrus/ BLA), along with connectivity in the emotional diencephalon (hypothalamus) and early visual areas (occipital pole).
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spelling pubmed-45596602015-09-11 Personality traits predict brain activation and connectivity when witnessing a violent conflict Stock, Jan Van den Hortensius, Ruud Sinke, Charlotte Goebel, Rainer de Gelder, Beatrice Sci Rep Article As observers we excel in decoding the emotional signals telling us that a social interaction is turning violent. The neural substrate and its modulation by personality traits remain ill understood. We performed an fMRI experiment in which participants watched videos displaying a violent conflict between two people. Observers’ attention was directed to either the aggressor or the victim. Focusing on the aggressor (vs. focusing on the victim) activated the superior temporal sulcus (STS), extra-striate body area (EBA), occipital poles and centro-medial amygdala (CMA). Stronger instantaneous connectivity occurred between these and the EBA, insula, and the red nucleus. When focusing on the victim, basolateral amygdala (BLA) activation was related to trait empathy and showed increased connectivity with the insula and red nucleus. STS activation was associated with trait aggression and increased connectivity with the hypothalamus. The findings reveal that focusing on the aggressor of a violent conflict triggers more activation in categorical (EBA) and emotion (CMA, STS) areas. This is associated with increased instantaneous connectivity among emotion areas (CMA-insula) and between categorical and emotion (EBA-STS) areas. When the focus is on the victim, personality traits (aggression/empathy) modulate activity in emotion areas (respectively STS and postcentral gyrus/ BLA), along with connectivity in the emotional diencephalon (hypothalamus) and early visual areas (occipital pole). Nature Publishing Group 2015-09-04 /pmc/articles/PMC4559660/ /pubmed/26337369 http://dx.doi.org/10.1038/srep13779 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Stock, Jan Van den
Hortensius, Ruud
Sinke, Charlotte
Goebel, Rainer
de Gelder, Beatrice
Personality traits predict brain activation and connectivity when witnessing a violent conflict
title Personality traits predict brain activation and connectivity when witnessing a violent conflict
title_full Personality traits predict brain activation and connectivity when witnessing a violent conflict
title_fullStr Personality traits predict brain activation and connectivity when witnessing a violent conflict
title_full_unstemmed Personality traits predict brain activation and connectivity when witnessing a violent conflict
title_short Personality traits predict brain activation and connectivity when witnessing a violent conflict
title_sort personality traits predict brain activation and connectivity when witnessing a violent conflict
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4559660/
https://www.ncbi.nlm.nih.gov/pubmed/26337369
http://dx.doi.org/10.1038/srep13779
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