Identifying Emotions on the Basis of Neural Activation.

Identifying Emotions on the Basis of Neural Activation.
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DOI:
10.1371/journal.pone.0066032
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Just MA
Just MA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kassam KS;Markey AR;Cherkassky VL;Loewenstein G;Just MA

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我们试图确定与特定情绪体验相对应的神经激活的可辨别性和组织。方法演员被要求在功能磁共振成像扫描仪中自我诱导九种情绪状态(愤怒、厌恶、嫉妒、恐惧、快乐、欲望、骄傲、悲伤和羞耻)。使用高斯朴素贝叶斯合并方差分类器,我们证明了识别个体所经历的特定情绪的能力,其准确性远远超过机会的基础上:1)在其他试验中同一个体的神经激活,2)经历类似试验的其他个体的神经激活,以及3)同一个体的神经激活到定性不同类型的情绪诱导。因子分析确定效价,唤醒,社会性和欲望的维度下的激活模式。这些结果提示了情绪的神经表征结构,并为情绪处理理论提供了信息。
We attempt to determine the discriminability and organization of neural activation corresponding to the experience of specific emotions. Method actors were asked to self-induce nine emotional states (anger, disgust, envy, fear, happiness, lust, pride, sadness, and shame) while in an fMRI scanner. Using a Gaussian Naïve Bayes pooled variance classifier, we demonstrate the ability to identify specific emotions experienced by an individual at well over chance accuracy on the basis of: 1) neural activation of the same individual in other trials, 2) neural activation of other individuals who experienced similar trials, and 3) neural activation of the same individual to a qualitatively different type of emotion induction. Factor analysis identified valence, arousal, sociality, and lust as dimensions underlying the activation patterns. These results suggest a structure for neural representations of emotion and inform theories of emotional processing.
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