期刊
BRAIN STRUCTURE & FUNCTION
卷 227, 期 5, 页码 1655-1672出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00429-022-02462-5
关键词
Behavioral pattern similarity analysis; Emotional expressions; Individual differences; Long-term face recognition; Medial prefrontal cortex; Occipito-temporal cortex
资金
- National Key Research and Development Program of China [2018YFA0701400]
- National Natural Science Foundation of China (NSFC) [91632117, 31700998, 31530032]
- Fundamental Research Funds for Central Universities [ZYGX2015Z002]
- Science, Innovation and Technology Department of the Sichuan Province [2018JY0001]
Studies have shown that faces with threatening expressions are more easily remembered than non-threatening faces. This study investigates whether this memory advantage persists over a period of more than 1.5 years and which neural systems are involved in this effect. The results indicate that threatening facial expressions lead to persistent recognition over periods of more than 1.5 years, and that the neural activity in the bilateral inferior occipital gyrus and ventromedial prefrontal/orbitofrontal cortex is associated with differential recognition of emotional faces.
Studies demonstrated that faces with threatening emotional expressions are better remembered than non-threatening faces. However, whether this memory advantage persists over years and which neural systems underlie such an effect remains unknown. Here, we employed an individual difference approach to examine whether the neural activity during incidental encoding was associated with differential recognition of faces with emotional expressions (angry, fearful, happy, sad and neutral) after a retention interval of > 1.5 years (N = 89). Behaviorally, we found a better recognition for threatening (angry, fearful) versus non-threatening (happy and neutral) faces after a delay of > 1.5 years, which was driven by forgetting of non-threatening faces compared with immediate recognition after encoding. Multivariate principal component analysis (PCA) on the behavioral responses further confirmed the discriminative recognition performance between threatening and non-threatening faces. A voxel-wise whole-brain analysis on the concomitantly acquired functional magnetic resonance imaging (fMRI) data during incidental encoding revealed that neural activity in bilateral inferior occipital gyrus (IOG) and ventromedial prefrontal/orbitofrontal cortex (vmPFC/OFC) was associated with the individual differences in the discriminative emotional face recognition performance measured by an innovative behavioral pattern similarity analysis (BPSA). The left fusiform face area (FFA) was additionally determined using a regionally focused analysis. Overall, the present study provides evidence that threatening facial expressions lead to persistent face recognition over periods of > 1.5 years, and that differential encoding-related activity in the medial prefrontal cortex and occipito-temporal cortex may underlie this effect.
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