Culture shapes electrocortical responses during emotion suppression
Culture shapes electrocortical responses during emotion suppression
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DOI：
10.1093/scan/nss036
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发表时间：
2013-06-01
影响因子：
4.2
通讯作者：
Kitayama, Shinobu
中科院分区：
文献类型：
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作者：
Murata, Asuka;Moser, Jason S.;Kitayama, Shinobu
此前的研究表明，情绪控制在亚洲文化中受到高度重视。然而，关于这种文化价值观如何影响情绪处理，我们知之甚少。在这里，我们假设亚洲人受过“文化训练”，在被要求抑制情绪表达时，会下调情绪处理。然而，对于欧洲裔美国人来说，这种下调监管的可能性不大，因为他们的文化更重视情感表达(而不是控制)。为了验证这些预测，我们采用了事件相关电位的顶叶晚期正电位(LPP)作为情绪处理的客观指标。亚裔和欧洲裔美国人都接触到了令人不快或中性的图片，同时被指示注意或抑制情绪的表达。两组患者均表现出与刺激后600毫秒相似的同样显著的顶叶阳性反应。然而，正如预测的那样，亚洲人随后在压抑(vs出席)条件下显示出顶叶LPP显著降低。刺激后2000毫秒，最初的正性完全消失。相比之下，对于欧洲美国人来说，顶叶LPP抑制效应是完全没有的，尽管在抑制(Vs Add)条件下，额叶正性活动出现了早期的、持续的增加。对文化和情感研究的意义进行了讨论。
Previous work has shown that emotional control is highly valued in Asian culture. However, little is known about how this cultural value might influence emotional processing. Here, we hypothesized that Asians are 'culturally trained' to down-regulate emotional processing when required to suppress emotional expressions. Such down-regulation, however, is unlikely for European Americans because their culture values emotional expression (vs control) more. To test these predictions, we adopted the parietal late positive potential (LPP) of the event-related potential as an objective indicator of emotional processing. Both Asian and European Americans were exposed to either unpleasant or neutral pictures while instructed to either attend or suppress expression of emotions. Both groups showed an equally pronounced parietal positivity similar to 600 ms post-stimulus. As predicted, however, Asians subsequently showed a significant decrease of the parietal LPP in the suppression (vs attend) condition. The initial positivity completely disappeared 2000 ms post-stimulus. In contrast, for European Americans the parietal LPP suppression effect was completely absent although there was an early occurring, sustained increase in frontal positivity in the suppression (vs attend) condition. Implications for culture and emotion research are discussed.