A growing literature supports the existence of interactions between emotion and action in the brain, and the central participation of the anterior midcingulate cortex (aMCC) in this regard. In the present functional magnetic resonance imaging study, we sought to investigate the role of self-relevance during such interactions by varying the context in which threating pictures were presented (with guns pointed towards or away from the observer). Participants performed a simple visual detection task following exposure to such stimuli. Except for voxelwise tests, we adopted a Bayesian analysis framework which evaluated evidence for the hypotheses of interest, given the data, in a continuous fashion. Behaviorally, our results demonstrated a valence by context interaction such that there was a tendency of speeding up responses to targets after viewing threat pictures directed towards the participant. In the brain, interaction patterns that paralleled those observed behaviorally were observed most notably in the middle temporal gyrus, supplementary motor area, precentral gyrus, and anterior insula. In these regions, activity was overall greater during threat conditions relative to neutral ones, and this effect was enhanced in the directed towards context. A valence by context interaction was observed in the aMCC too, where we also observed a correlation (across participants) of evoked responses and reaction time data. Taken together, our study revealed the context-sensitive engagement of motor-related areas during emotional perception, thus supporting the idea that emotion and action interact in important ways in the brain.

中文翻译：

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大脑中情绪和行动之间的相互作用

越来越多的文献支持大脑中情绪和行动之间存在相互作用，以及前中扣带皮层 (aMCC) 在这方面的中央参与。在目前的功能磁共振成像研究中，我们试图通过改变呈现威胁图片的背景（枪指向或远离观察者）来研究自我相关性在此类交互中的作用。参与者在暴露于此类刺激后执行简单的视觉检测任务。除了体素测试外，我们采用了贝叶斯分析框架，该框架以连续的方式评估给定数据的感兴趣假设的证据。在行为上，我们的结果证明了上下文交互的效价，因此在查看针对参与者的威胁图片后，有加快对目标响应的趋势。在大脑中，与行为上观察到的交互模式平行的交互模式在颞中回、辅助运动区、中央前回和前岛叶中最为显着。在这些地区，相对于中立地区，在威胁条件下的活动总体上更大，并且这种影响在针对环境中得到增强。在 aMCC 中也观察到上下文交互的效价，我们还观察到诱发反应和反应时间数据的相关性（跨参与者）。总之，我们的研究揭示了情绪感知过程中运动相关区域的上下文敏感参与，