Kragel Philip A, LaBar Kevin S
Department of Psychology & Neuroscience and Center for Cognitive Neuroscience, Duke University , Durham, North Carolina 27708.
eNeuro. 2016 Apr 29;3(2). doi: 10.1523/ENEURO.0090-15.2016. eCollection 2016 Mar-Apr.
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.
对人类情绪感知的研究已将一组分布广泛的脑区与面部、声音和身体表情中的情绪识别联系起来。特别是,已表明右半球体感皮层的损伤会损害对情绪的面部和声音表情的识别。尽管这些发现表明体感皮层代表了与不同情绪相关的身体状态,如皱眉或张大嘴巴,但在情绪感知过程中直接将体感活动与主观体验联系起来的功能证据严重缺乏。使用功能磁共振成像和多变量解码技术,我们表明,感知情绪的声音和面部表情会在右体感皮层产生血液动力学活动,这种活动能够区分情绪类别,呈现躯体感觉定位组织,并跟踪自我报告的感觉体验。这些发现既支持了情绪的具身化观点,也为情绪表达如何能够影响感知者的主观体验提供了机制上的见解。