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Park, Jungjoon
인지 및 사회성 연구단
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Experience of a hierarchical relationship between a pair of mice specifically influences their affective empathy toward each other

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Title
Experience of a hierarchical relationship between a pair of mice specifically influences their affective empathy toward each other
Author(s)
Jungjoon Park; Seungshin Ha; Hee-Sup Shin; Jeong, Jaeseung
Publication Date
2022-06
Journal
Genes, Brain and Behavior, v.21, no.5
Publisher
John Wiley and Sons Inc
Abstract
© 2022 The Authors. Genes, Brain and Behavior published by International Behavioural and Neural Genetics Society and John Wiley & Sons Ltd.Prior experience of social hierarchy is known to modulate emotional contagion, a basic form of affective empathy. However, it is not known whether this behavioral effect occurs through changes in an individual's traits due to their experience of social hierarchy or specific social interrelationships between the individuals. Groups of four mice with an established in-group hierarchy were used to address this in conjunction with a tube test. The rank-1 and rank-4 mice were designated as the dominant or subordinate groups, respectively. The two individuals in between were designated as the intermediate groups, which were then used as the observers in observational fear learning (OFL) experiments, an assay for emotional contagion. The intermediate observers showed greater OFL responses to the dominant demonstrator than the subordinate demonstrators recruited from the same home-cage. When the demonstrators were strangers from different cages, the intermediate observers did not distinguish between dominant and subordinate, displaying the same level of OFL. In a reverse setting in which the intermediate group was used as the demonstrator, the subordinate observers showed higher OFL responses than the dominant observers, and this occurred only when the demonstrators were cagemates of the observers. Furthermore, the bigger the rank difference between a pair, the higher the OFL level that the observer displayed. Altogether, these results demonstrate that the hierarchical interrelationship established between a given pair of animals is critical for expressing emotional contagion between them rather than any potential changes in intrinsic traits due to the experience of dominant/subordinate hierarchy.
URI
https://pr.ibs.re.kr/handle/8788114/11737
DOI
10.1111/gbb.12810
ISSN
1601-1848
Appears in Collections:
Center for Cognition and Sociality(인지 및 사회성 연구단) > 1. Journal Papers (저널논문)
Center for Cognition and Sociality(인지 및 사회성 연구단) > Social Neuroscience Group(사회성 뇌과학 그룹) > 1. Journal Papers (저널논문)
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