脑岛
心理学
交互感受
功能磁共振成像
岛叶皮质
扣带回前部
神经基质
神经科学
大脑活动与冥想
感觉
意识的神经相关物
认知心理学
大脑定位
扣带皮质
感知
认知
脑电图
中枢神经系统
社会心理学
作者
Hugo Critchley,Stefan Wiens,Pia Rotshtein,Arne Öhman,Raymond J. Dolan
摘要
Influential theories of human emotion argue that subjective feeling states involve representation of bodily responses elicited by emotional events. Within this framework, individual differences in intensity of emotional experience reflect variation in sensitivity to internal bodily responses. We measured regional brain activity by functional magnetic resonance imaging (fMRI) during an interoceptive task wherein subjects judged the timing of their own heartbeats. We observed enhanced activity in insula, somatomotor and cingulate cortices. In right anterior insular/opercular cortex, neural activity predicted subjects' accuracy in the heartbeat detection task. Furthermore, local gray matter volume in the same region correlated with both interoceptive accuracy and subjective ratings of visceral awareness. Indices of negative emotional experience correlated with interoceptive accuracy across subjects. These findings indicate that right anterior insula supports a representation of visceral responses accessible to awareness, providing a substrate for subjective feeling states.
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