Acquisition and generalization of emotional and neural responses to faces associated with negative and positive feedback behaviours

被引:1
作者
Lin, Huiyan [1 ,2 ]
Bruchmann, Maximilian [3 ,4 ]
Schindler, Sebastian [3 ,4 ]
Straube, Thomas [3 ,4 ]
机构
[1] Guangdong Univ Finance, Sch Natl Finance, Lab Behav & Reg Finance, Guangzhou, Peoples R China
[2] Guangdong Univ Finance, Inst Appl Psychol, Guangzhou, Peoples R China
[3] Univ Munster, Inst Med Psychol & Syst Neurosci, Munster, Germany
[4] Univ Munster, Otto Creutzfeldt Ctr Cognit & Behav Neurosci, Munster, Germany
关键词
social learning; generalization; faces; emotional evaluations; fusiform gyrus; FEAR GENERALIZATION; AMYGDALA ACTIVATION; CONDITIONING DEPENDS; FACIAL EXPRESSION; METAANALYSIS; MECHANISMS; PERCEPTION; MEMORY; NEUROBIOLOGY; RECOGNITION;
D O I
10.3389/fnins.2024.1399948
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Faces can acquire emotional meaning by learning to associate individuals with specific behaviors. Here, we investigated emotional evaluation and brain activations toward faces of persons who had given negative or positive evaluations to others. Furthermore, we investigated how emotional evaluations and brain activation generalize to perceptually similar faces. Valence ratings indicated learning and generalization effects for both positive and negative faces. Brain activation, measured with functional magnetic resonance imaging (fMRI), showed significantly increased activation in the fusiform gyrus (FG) to negatively associated faces but not positively associated ones. Remarkably, brain activation in FG to faces to which emotional meaning (negative and positive) was successfully generalized was decreased compared to neutral faces. This suggests that the emotional relevance of faces is not simply associated with increased brain activation in visual areas. While, at least for negative conditions, faces paired with negative feedback behavior are related to potentiated brain responses, the opposite is seen for perceptually very similar faces despite generalized emotional responses.
引用
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页数:12
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