MEG signatures of long-term effects of agreement and disagreement with the majority

Abstract People often change their beliefs by succumbing to an opinion of others. Such changes are often referred to as effects of social influence. While some previous studies have focused on the reinforcement learning mechanisms of social influence or on its internalization, others have reported e...

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Autores principales:	A. Gorin, V. Klucharev, A. Ossadtchi, I. Zubarev, V. Moiseeva, A. Shestakova
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b6649e6982784d47b2fc1ed4b4fb832d
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spelling	oai:doaj.org-article:b6649e6982784d47b2fc1ed4b4fb832d2021-12-02T13:30:34ZMEG signatures of long-term effects of agreement and disagreement with the majority10.1038/s41598-021-82670-x2045-2322https://doaj.org/article/b6649e6982784d47b2fc1ed4b4fb832d2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82670-xhttps://doaj.org/toc/2045-2322Abstract People often change their beliefs by succumbing to an opinion of others. Such changes are often referred to as effects of social influence. While some previous studies have focused on the reinforcement learning mechanisms of social influence or on its internalization, others have reported evidence of changes in sensory processing evoked by social influence of peer groups. In this study, we used magnetoencephalographic (MEG) source imaging to further investigate the long-term effects of agreement and disagreement with the peer group. The study was composed of two sessions. During the first session, participants rated the trustworthiness of faces and subsequently learned group rating of each face. In the first session, a neural marker of an immediate mismatch between individual and group opinions was found in the posterior cingulate cortex, an area involved in conflict-monitoring and reinforcement learning. To identify the neural correlates of the long-lasting effect of the group opinion, we analysed MEG activity while participants rated faces during the second session. We found MEG traces of past disagreement or agreement with the peers at the parietal cortices 230 ms after the face onset. The neural activity of the superior parietal lobule, intraparietal sulcus, and precuneus was significantly stronger when the participant’s rating had previously differed from the ratings of the peers. The early MEG correlates of disagreement with the majority were followed by activity in the orbitofrontal cortex 320 ms after the face onset. Altogether, the results reveal the temporal dynamics of the neural mechanism of long-term effects of disagreement with the peer group: early signatures of modified face processing were followed by later markers of long-term social influence on the valuation process at the ventromedial prefrontal cortex.A. GorinV. KlucharevA. OssadtchiI. ZubarevV. MoiseevaA. ShestakovaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. Gorin V. Klucharev A. Ossadtchi I. Zubarev V. Moiseeva A. Shestakova MEG signatures of long-term effects of agreement and disagreement with the majority
description	Abstract People often change their beliefs by succumbing to an opinion of others. Such changes are often referred to as effects of social influence. While some previous studies have focused on the reinforcement learning mechanisms of social influence or on its internalization, others have reported evidence of changes in sensory processing evoked by social influence of peer groups. In this study, we used magnetoencephalographic (MEG) source imaging to further investigate the long-term effects of agreement and disagreement with the peer group. The study was composed of two sessions. During the first session, participants rated the trustworthiness of faces and subsequently learned group rating of each face. In the first session, a neural marker of an immediate mismatch between individual and group opinions was found in the posterior cingulate cortex, an area involved in conflict-monitoring and reinforcement learning. To identify the neural correlates of the long-lasting effect of the group opinion, we analysed MEG activity while participants rated faces during the second session. We found MEG traces of past disagreement or agreement with the peers at the parietal cortices 230 ms after the face onset. The neural activity of the superior parietal lobule, intraparietal sulcus, and precuneus was significantly stronger when the participant’s rating had previously differed from the ratings of the peers. The early MEG correlates of disagreement with the majority were followed by activity in the orbitofrontal cortex 320 ms after the face onset. Altogether, the results reveal the temporal dynamics of the neural mechanism of long-term effects of disagreement with the peer group: early signatures of modified face processing were followed by later markers of long-term social influence on the valuation process at the ventromedial prefrontal cortex.
format	article
author	A. Gorin V. Klucharev A. Ossadtchi I. Zubarev V. Moiseeva A. Shestakova
author_facet	A. Gorin V. Klucharev A. Ossadtchi I. Zubarev V. Moiseeva A. Shestakova
author_sort	A. Gorin
title	MEG signatures of long-term effects of agreement and disagreement with the majority
title_short	MEG signatures of long-term effects of agreement and disagreement with the majority
title_full	MEG signatures of long-term effects of agreement and disagreement with the majority
title_fullStr	MEG signatures of long-term effects of agreement and disagreement with the majority
title_full_unstemmed	MEG signatures of long-term effects of agreement and disagreement with the majority
title_sort	meg signatures of long-term effects of agreement and disagreement with the majority
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b6649e6982784d47b2fc1ed4b4fb832d
work_keys_str_mv	AT agorin megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority AT vklucharev megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority AT aossadtchi megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority AT izubarev megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority AT vmoiseeva megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority AT ashestakova megsignaturesoflongtermeffectsofagreementanddisagreementwiththemajority
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MEG signatures of long-term effects of agreement and disagreement with the majority

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