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The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies
Primates are remarkably adept at ranking each other within social hierarchies, a capacity that is critical to successful group living. Surprisingly little, however, is understood about the neurobiology underlying this quintessential aspect of primate cognition. In our experiment, participants first...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Cell Press
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3580285/ https://www.ncbi.nlm.nih.gov/pubmed/23141075 http://dx.doi.org/10.1016/j.neuron.2012.09.035 |
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author | Kumaran, Dharshan Melo, Hans Ludwig Duzel, Emrah |
author_facet | Kumaran, Dharshan Melo, Hans Ludwig Duzel, Emrah |
author_sort | Kumaran, Dharshan |
collection | PubMed |
description | Primates are remarkably adept at ranking each other within social hierarchies, a capacity that is critical to successful group living. Surprisingly little, however, is understood about the neurobiology underlying this quintessential aspect of primate cognition. In our experiment, participants first acquired knowledge about a social and a nonsocial hierarchy and then used this information to guide investment decisions. We found that neural activity in the amygdala tracked the development of knowledge about a social, but not a nonsocial, hierarchy. Further, structural variations in amygdala gray matter volume accounted for interindividual differences in social transitivity performance. Finally, the amygdala expressed a neural signal selectively coding for social rank, whose robustness predicted the influence of rank on participants’ investment decisions. In contrast, we observed that the linear structure of both social and nonsocial hierarchies was represented at a neural level in the hippocampus. Our study implicates the amygdala in the emergence and representation of knowledge about social hierarchies and distinguishes the domain-general contribution of the hippocampus. |
format | Online Article Text |
id | pubmed-3580285 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Cell Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-35802852013-02-25 The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies Kumaran, Dharshan Melo, Hans Ludwig Duzel, Emrah Neuron Article Primates are remarkably adept at ranking each other within social hierarchies, a capacity that is critical to successful group living. Surprisingly little, however, is understood about the neurobiology underlying this quintessential aspect of primate cognition. In our experiment, participants first acquired knowledge about a social and a nonsocial hierarchy and then used this information to guide investment decisions. We found that neural activity in the amygdala tracked the development of knowledge about a social, but not a nonsocial, hierarchy. Further, structural variations in amygdala gray matter volume accounted for interindividual differences in social transitivity performance. Finally, the amygdala expressed a neural signal selectively coding for social rank, whose robustness predicted the influence of rank on participants’ investment decisions. In contrast, we observed that the linear structure of both social and nonsocial hierarchies was represented at a neural level in the hippocampus. Our study implicates the amygdala in the emergence and representation of knowledge about social hierarchies and distinguishes the domain-general contribution of the hippocampus. Cell Press 2012-11-08 /pmc/articles/PMC3580285/ /pubmed/23141075 http://dx.doi.org/10.1016/j.neuron.2012.09.035 Text en © 2012 ELL & Excerpta Medica. https://creativecommons.org/licenses/by/3.0/ Open Access under CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/) license |
spellingShingle | Article Kumaran, Dharshan Melo, Hans Ludwig Duzel, Emrah The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title | The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title_full | The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title_fullStr | The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title_full_unstemmed | The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title_short | The Emergence and Representation of Knowledge about Social and Nonsocial Hierarchies |
title_sort | emergence and representation of knowledge about social and nonsocial hierarchies |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3580285/ https://www.ncbi.nlm.nih.gov/pubmed/23141075 http://dx.doi.org/10.1016/j.neuron.2012.09.035 |
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