Somatosensory Representations Link the Perception of Emotional Expressions and Sensory Experience.
Somatosensory Representations Link the Perception of Emotional Expressions and Sensory Experience.
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DOI：
10.1523/eneuro.0090-15.2016
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发表时间：
2016-03
期刊：
影响因子：
3.4
通讯作者：
LaBar KS
中科院分区：
文献类型：
--
作者：
Kragel PA;LaBar KS
对人类情绪感知的研究已将一组分布式大脑区域与面部、声音和身体表达中的情绪识别联系起来。特别是，右半球体感皮层的损伤已被证明会损害面部和声音情感表达的识别。尽管这些发现表明体感皮层代表与不同情绪相关的身体状态，例如皱眉或张开下巴，但在情绪感知过程中直接联系体感活动和主观体验的功能证据却严重缺乏。利用功能性磁共振成像和多变量解码技术，我们发现感知声音和面部表情的情绪会在右侧体感皮层产生血流动力学活动，从而区分情绪类别，展示躯体组织并跟踪自我报告的感官体验。这些发现既支持了对情感的具体描述，又提供了关于情感表达如何影响感知者主观体验的机制性见解。
Studies of human emotion perception have linked a distributed set of brain regions to the recognition of emotion in facial, vocal, and body expressions. In particular, lesions to somatosensory cortex in the right hemisphere have been shown to impair recognition of facial and vocal expressions of emotion. Although these findings suggest that somatosensory cortex represents body states associated with distinct emotions, such as a furrowed brow or gaping jaw, functional evidence directly linking somatosensory activity and subjective experience during emotion perception is critically lacking. Using functional magnetic resonance imaging and multivariate decoding techniques, we show that perceiving vocal and facial expressions of emotion yields hemodynamic activity in right somatosensory cortex that discriminates among emotion categories, exhibits somatotopic organization, and tracks self-reported sensory experience. The findings both support embodied accounts of emotion and provide mechanistic insight into how emotional expressions are capable of biasing subjective experience in those who perceive them.