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首页> 美国卫生研究院文献>Cerebral Cortex (New York NY) >Individual Differences in Laughter Perception Reveal Roles for Mentalizing and Sensorimotor Systems in the Evaluation of Emotional Authenticity
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Individual Differences in Laughter Perception Reveal Roles for Mentalizing and Sensorimotor Systems in the Evaluation of Emotional Authenticity

机译：笑者知觉的个体差异揭示了心理和感觉运动系统在情绪真实性评估中的作用

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摘要

Humans express laughter differently depending on the context: polite titters of agreement are very different from explosions of mirth. Using functional MRI, we explored the neural responses during passive listening to authentic amusement laughter and controlled, voluntary laughter. We found greater activity in anterior medial prefrontal cortex (amPFC) to the deliberate, Emitted Laughs, suggesting an obligatory attempt to determine others' mental states when laughter is perceived as less genuine. In contrast, passive perception of authentic Evoked Laughs was associated with greater activity in bilateral superior temporal gyri. An individual differences analysis found that greater accuracy on a post hoc test of authenticity judgments of laughter predicted the magnitude of passive listening responses to laughter in amPFC, as well as several regions in sensorimotor cortex (in line with simulation accounts of emotion perception). These medial prefrontal and sensorimotor sites showed enhanced positive connectivity with cortical and subcortical regions during listening to involuntary laughter, indicating a complex set of interacting systems supporting the automatic emotional evaluation of heard vocalizations.
机译：人类根据语境表达笑声的方式有所不同：礼貌的同意滴答声与欢乐的爆炸声完全不同。使用功能性MRI，我们探索了被动聆听真实娱乐笑声和受控，自愿笑声期间的神经反应。我们发现有意发笑的行为在前内侧前额叶皮层（amPFC）中有更大的活动，这表明当人们认为笑声的真实性较弱时，有义务尝试确定他人的心理状态。相反，对真实的诱发笑的被动感知与双侧颞上回的更大活动相关。个体差异分析发现，在对笑的真实性进行事后判断的事后检验中，更高的准确性预测了amPFC以及感觉运动皮层中多个区域的笑声被动听觉响应的幅度（与情感感知的模拟说明一致）。这些内侧前额叶和感觉运动部位在听不由自主的笑声时显示出与皮质和皮质下区域的增强的正连通性，表明一组复杂的交互系统支持对自动发声的情感评估。

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