Different impressions of other agents obtained through social interaction uniquely modulate dorsal and ventral pathway activities in the social human brain
Different impressions of other agents obtained through social interaction uniquely modulate dorsal and ventral pathway activities in the social human brain
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DOI：
10.1016/j.cortex.2014.03.011
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发表时间：
2014-09-01
期刊：
影响因子：
3.6
通讯作者：
Naito, Eiichi
中科院分区：
文献类型：
--
作者：
Takahashi, Hideyuki;Terada, Kazunori;Naito, Eiichi
大脑中的内部(神经元)表征会被我们的经验改变，这种现象并不是感觉和运动系统所独有的。在这里，我们展示了通过与各种代理人的社会互动获得的不同印象独特地调节了大脑网络中调节人类社会行为的背侧和腹侧路径的活动。我们用功能磁共振成像(FMRI)扫描了16名健康志愿者的大脑活动，当他们与人类、类人机器人、机械机器人、交互式机器人和计算机进行一个简单的硬币匹配游戏时。在扫描仪中玩这个游戏之前，参与者分别体验了与每个对手的社交互动，并使用两个问卷对他们的初始印象进行了评分。我们发现，参与者在两个心理维度上对对手进行了感知：一个维度是参与者将拟人化的印象归因于一些具有心理功能的对手，另一个维度是参与者将拟人化印象归因于一些具有心理功能的对手，而另一个维度则是参与者将对手描述为智能的。有趣的是，这种“读心力”维度与参与者频繁改变他们的游戏策略以防止对手想象他们的策略有关，这一点在游戏中增加的熵中得到了证实。我们还发现，这两个因素分别调节了不同社会性大脑区域的活动。具体地说，思维-持有性调节了颞顶交界区背侧以及内侧前额叶和后旁扣带皮质的活动，而读心性调节了颞顶交界区腹侧和颞极的活动。这些结果清楚地表明，社交大脑网络中的活动是通过与各种媒介进行社会互动的预扫描经验来调节的。此外，我们的发现阐明了社交人脑中存在两个截然不同的功能网络。与拟人化或看起来聪明的代理人的社交互动可能会明显地塑造我们社交大脑的内部表征，这反过来可能决定我们在社会中遇到的各种代理人的行为方式。(C)2014年提交人。爱思唯尔有限公司出版。
Internal (neuronal) representations in the brain are modified by our experiences, and this phenomenon is not unique to sensory and motor systems. Here, we show that different impressions obtained through social interaction with a variety of agents uniquely modulate activity of dorsal and ventral pathways of the brain network that mediates human social behavior.We scanned brain activity with functional magnetic resonance imaging (fMRI) in 16 healthy volunteers when they performed a simple matching-pennies game with a human, human-like android, mechanical robot, interactive robot, and a computer. Before playing this game in the scanner, participants experienced social interactions with each opponent separately and scored their initial impressions using two questionnaires.We found that the participants perceived opponents in two mental dimensions: one represented "mind-holderness" in which participants attributed anthropomorphic impressions to some of the opponents that had mental functions, while the other dimension represented "mind-readerness" in which participants characterized opponents as intelligent. Interestingly, this "mind-readerness" dimension correlated to participants frequently changing their game tactic to prevent opponents from envisioning their strategy, and this was corroborated by increased entropy during the game. We also found that the two factors separately modulated activity in distinct social brain regions. Specifically, mind-holderness modulated activity in the dorsal aspect of the temporoparietal junction (TPJ) and medial prefrontal and posterior paracingulate cortices, while mind-readerness modulated activity in the ventral aspect of TPJ and the temporal pole.These results clearly demonstrate that activity in social brain networks is modulated through pre-scanning experiences of social interaction with a variety of agents. Furthermore, our findings elucidated the existence of two distinct functional networks in the social human brain. Social interaction with anthropomorphic or intelligent-looking agents may distinctly shape the internal representation of our social brain, which may in turn determine how we behave for various agents that we encounter in our society. (C) 2014 The Authors. Published by Elsevier Ltd.