真正的面部价值:在的下皮层中处理自然主义面部表情
Jessica Taubert1,2, Shruti Japee1
1The National Institute of Mental Health.
Journal of cognitive neuroscience
|January 23, 2024
概括
的大脑处理恐惧信号不同于视觉线索. 下皮质更多地响应恐惧表达的背景,而不仅仅是他们的外表,这表明先进的社会智能.
科学领域:
- 神经科学是一个神经科学.
- 灵长类动物学 灵长类动物学
- 社会认知是指社会认知.
背景情况:
- 恐惧表达是灵长类动物中至关重要的社会信号.
- 的下皮层 (IT) 在实验室环境中对恐惧的面孔表现出价值效应.
- 的"恐惧笑容"发生在不同的环境中,质疑IT对特定表情的调整与恐惧信号的调整.
研究的目的:
- 研究的下皮质如何编码各种可怕的面部表情.
- 确定IT是否调整为原型的"恐惧笑容"或更广泛的恐惧信号.
- 探索IT在处理面部表情的社会信息中的作用.
主要方法:
- 使用功能磁共振成像 (fMRI) 和行为任务 (两种替代强制选择).
- 根据情感背景 (平静与恐惧) 和视觉动作单元 (中立与恐惧笑容) 选择的面刺激.
- 包括人类面部表情进行比较.
主要成果:
- 根据情感背景选择的面孔在下皮质中产生了比通过视觉外观选择的更强的价值效应.
- 人类面部表情在IT中只产生了微弱的价值效应.
- 行为数据表明",恐惧笑容"的感知愉悦度存在变化.
结论:
- 的下皮质比以前认为的更多地参与了社会智力.
- 它编码了自然主义面部刺激的新兴特性,超出了基本的视觉特征.
- 这些发现需要对初级IT功能和操作化的理论进行重新评估.
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