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Representation of Others' Action by Neurons in Monkey Medial Frontal Cortex

机译：猴子内侧额叶皮层中神经元对他人行为的表征

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Successful social interaction depends on not only the ability to identify with others but also the ability to distinguish between aspects of self and others [[1], [2], [3] and [4]]. Although there is considerable knowledge of a shared neural substrate between self-action and others' action [5], it remains unknown where and how in the brain the action of others is uniquely represented. Exploring such agent-specific neural codes is important because one's action and intention can differ between individuals [1]. Moreover, the assignment of social agency breaks down in a range of mental disorders [[6], [7] and [8]]. Here, using two monkeys monitoring each other's action for adaptive behavioral planning, we show that the medial frontal cortex (MFC) contains a group of neurons that selectively encode others' action. These neurons, observed in both dominant and submissive monkeys, were significantly more prevalent in the dorsomedial convexity region of the MFC including the pre-supplementary motor area than in the cingulate sulcus region of the MFC including the rostral cingulate motor area. Further tests revealed that the difference in neuronal activity was not due to gaze direction or muscular activity. We suggest that the MFC is involved in self-other differentiation in the domain of motor action and provides a fundamental neural signal for social learning. Highlights: Monkeys can utilize others' action information for planning their own action MFC contains neurons selectively encoding actions of a social partner Partner-selective neurons are more prevalent in MFC convexity than in MFC sulcus Monkey MFC is involved in self-other differentiation in the domain of motor action
机译：成功的社交互动不仅取决于与他人认同的能力，还取决于区分自我和他人的各个方面的能力[[1]，[2]，[3]和[4]]。尽管在自我行动和他人的行动之间有共享的神经底物的知识[5]，但仍不清楚在他人的行动在大脑中的何处以及如何被独特地代表。探索此类特定于代理的神经代码非常重要，因为每个人的行动和意图可能有所不同[1]。此外，在一系列精神障碍中，社会机构的分配也破裂了[[6]，[7]和[8]]。在这里，使用两只猴子监视彼此的行为以进行适应性行为计划，我们表明内侧额叶皮层（MFC）包含一组选择性编码他人行为的神经元。在优势和顺从性猴子中观察到的这些神经元在包括补充运动前区的MFC的背背凸区域中比在包括有喙扣状运动区的MFC的扣状沟区域中更为普遍。进一步的测试表明，神经元活动的差异不是由于注视方向或肌肉活动引起的。我们建议MFC参与运动动作领域的自我差异，并为社会学习提供基本的神经信号。亮点：猴子可以利用他人的行动信息来计划自己的行动MFC包含选择性编码社交伙伴行动的神经元伙伴选择性神经元在MFC凸度中比在MFC沟中更普遍Monkey MFC参与域中的其他自我分化运动动作

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