Experience of a hierarchical relationship between a pair of mice specifically influences their affective empathy toward each other

IF 2.4 4区 心理学 Q2 BEHAVIORAL SCIENCES
Jungjoon Park, Seungshin Ha, Hee-Sup Shin, Jaeseung Jeong
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引用次数: 4

Abstract

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.

Practitioner points

  • Subordinate observer or dominant demonstrator resulted in higher affective empathic response in familiar pairs but not unfamiliar pairs.
  • The relative social rank of the observer with respect to the demonstrator had a negative linear correlation with the affective empathic response of the observer in familiar pairs but not unfamiliar pairs.
  • The effect of social rank on affective empathy is attributed to the prior social hierarchical interrelationship between them and is not due to intrinsic attributes of an individual based on one's dominance rank.

Abstract Image

一对老鼠之间等级关系的体验会特别影响它们对彼此的情感同理心
已知先前的社会等级经验可以调节情绪传染,这是情感共情的一种基本形式。然而,尚不清楚这种行为效应是由于个体的社会等级经历或个体之间特定的社会关系而通过个体特征的变化而发生的。4只老鼠一组,建立了组内等级制度,并结合试管试验来解决这个问题。将rank-1和rank-4小鼠分别指定为优势组和从属组。介于两者之间的两个人被指定为中间组,然后被用作观察性恐惧学习(OFL)实验的观察者,这是一种情绪感染的分析。中级观察员对主导示威者比从同一家庭笼子中招募的从属示威者表现出更大的OFL反应。当示威者是来自不同笼子的陌生人时,中间观察者不区分主导和从属,表现出相同水平的OFL。在中间组作为演示者的反向设置中,从属观察者比主导观察者表现出更高的OFL反应,而且这种情况仅在演示者与观察者在一起时发生。此外,一对之间的等级差异越大,观察者显示的OFL水平越高。总之,这些结果表明,在给定的一对动物之间建立的等级相互关系对于表达它们之间的情感感染至关重要,而不是由于主从等级的经历而导致的内在特征的任何潜在变化。练习者点下属观察者或主导演示者在熟悉组中产生更高的情感共情反应,而在不熟悉组中没有。观察者相对于演示者的相对社会等级与观察者在熟悉组中的情感共情反应呈负线性相关,而在不熟悉组中不存在。社会等级对情感共情的影响是由社会等级之间的先验相互关系决定的,而不是由基于支配等级的个体内在属性决定的。
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来源期刊
Genes Brain and Behavior
Genes Brain and Behavior 医学-行为科学
CiteScore
6.80
自引率
4.00%
发文量
62
审稿时长
4-8 weeks
期刊介绍: Genes, Brain and Behavior was launched in 2002 with the aim of publishing top quality research in behavioral and neural genetics in their broadest sense. The emphasis is on the analysis of the behavioral and neural phenotypes under consideration, the unifying theme being the genetic approach as a tool to increase our understanding of these phenotypes. Genes Brain and Behavior is pleased to offer the following features: 8 issues per year online submissions with first editorial decisions within 3-4 weeks and fast publication at Wiley-Blackwells High visibility through its coverage by PubMed/Medline, Current Contents and other major abstracting and indexing services Inclusion in the Wiley-Blackwell consortial license, extending readership to thousands of international libraries and institutions A large and varied editorial board comprising of international specialists.
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