Social Mimicry Enhances Mu-Suppression During Action Observation
Social Mimicry Enhances Mu-Suppression During Action Observation
复制标题
DOI：
10.1093/cercor/bhu016
复制
发表时间：
2015-08-01
期刊：
影响因子：
3.7
通讯作者：
Obhi, Sukhvinder S.
中科院分区：
文献类型：
--
作者：
Hogeveen, Jeremy;Chartrand, Tanya L.;Obhi, Sukhvinder S.
在社会交往中，人们倾向于模仿他人的手势和举止，这增加了好感和融洽。心理学家在社会层面上对模仿的前因后果进行了广泛的研究，但这种行为的神经基础仍不清楚。许多研究人员推测，模仿与人类镜像系统（HMS）的活动有关，HMS是一个涉及行动执行和观察的顶叶额叶区域网络。然而，在涉及模仿的互惠社会互动中，HMS的活动尚未得到证实。在这里，我们采用脑电图（EEG）镜像活动指数-动作观察期间的mu抑制-在测试前/测试后设计中，采用三种干预治疗中的一种：1)参与者被模仿的社会互动，2)没有模仿的社会互动，或3)无害的计算机任务，不涉及另一个人类代理人。从测试前到测试后，mu-抑制的变化随干预治疗的变化而变化，在治疗后的行动观察期间，被模仿的参与者显示出mu-抑制的增加。我们提出，这种HMS活动的特定调节作为模仿的功能构成了镜像系统参与真实社会模仿的第一个直接证据。
During social interactions, there is a tendency for people to mimic the gestures and mannerisms of others, which increases liking and rapport. Psychologists have extensively studied the antecedents and consequences of mimicry at the social level, but the neural basis of this behavior remains unclear. Many researchers have speculated that mimicry is related to activity in the human mirror system (HMS), a network of parietofrontal regions that are involved in both action execution and observation. However, activity of the HMS during reciprocal social interactions involving mimicry has not been demonstrated. Here, we took an electroencephalographic (EEG) index of mirror activity-mu-suppression during action observation-in a pretest/post-test design with 1 of 3 intervening treatments: 1) social interaction in which the participant was mimicked, 2) social interaction without mimicry, or 3) an innocuous computer task, not involving another human agent. The change in mu-suppression from pre- to post-test varied as a function of the intervening treatment, with participants who had been mimicked showing an increase in mu-suppression during the post-treatment action observation session. We propose that this specific modulation of HMS activity as a function of mimicry constitutes the first direct evidence for mirror system involvement in real social mimicry.