Developmental Differences in Affective Representation Between Prefrontal and Subcortical Structures.
Developmental Differences in Affective Representation Between Prefrontal and Subcortical Structures.
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DOI：
10.1093/scan/nsab093
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发表时间：
2021-07-31
影响因子：
4.2
通讯作者：
Helion C
中科院分区：
文献类型：
--
作者：
Mitchell WJ;Tepfer LJ;Henninger NM;Perlman SB;Murty VP;Helion C
发展研究已经确定了儿童和成人之间的前额叶和皮层下情感结构的差异，这与观察到的认知和行为成熟相对应，从相对简单的情感体验和表达到更微妙，复杂的。然而，情绪的神经表征的发展变化尚未得到很好的探索。成年人和儿童在情感认知的关键神经结构中表现出明显的情感表征差异，这是理所当然的。45名参与者（25名儿童和20名成人）在接受功能性磁共振成像时被动地观看流行电影中的积极，消极和中性片段。使用代表性相似性分析来衡量神经模式相似性的变化，我们发现儿童和成人之间的发展差异，在杏仁核，丘脑核和腹内侧前额叶皮层（vmPFC）：儿童产生较少的模式相似性内皮层下结构相对于vmPFC的一种现象，不复制在他们的老年同行。此外，儿童产生的代表性模式跨区域的具体价的差异，这些具体价的模式没有发现在成人。这些结果可能表明，随着个体从本能情感反应到更多评价性分析的成熟，情感表征在发展过程中变得越来越不相似。
Developmental studies have identified differences in prefrontal and subcortical affective structures between children and adults, which correspond with observed cognitive and behavioral maturations from relatively simplistic emotional experiences and expressions to more nuanced, complex ones. However, developmental changes in the neural representation of emotions have not yet been well explored. It stands to reason that adults and children may demonstrate observable differences in the representation of affect within key neurological structures implicated in affective cognition. Forty-five participants (25 children and 20 adults) passively viewed positive, negative and neutral clips from popular films while undergoing functional magnetic resonance imaging. Using representational similarity analysis to measure variability in neural pattern similarity, we found developmental differences between children and adults in the amygdala, nucleus accumbens and ventromedial prefrontal cortex (vmPFC): children generated less pattern similarity within subcortical structures relative to the vmPFC—a phenomenon not replicated among their older counterparts. Furthermore, children generated valence-specific differences in representational patterns across regions; these valence-specific patterns were not found in adults. These results may suggest that affective representations grow increasingly dissimilar over the course of development as individuals mature from visceral affective responses to more evaluative analyses.
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