中国临床心理学杂志

行为决策中的“作为”与“不作为”：事件相关电位研究

作者：周海波钟毅平

关键词：作为不作为反馈相关负波 P300

分类号：B842

出版年,卷(期):页码：2011,19(3):296-298

摘要：

目的：探讨"作为"与"不作为"两种不同决策行为下，"差"结果引起的大脑电位活动差异。方法：采用事件相关电位技术，让被试进行模拟股票购买操作，记录给予被试"涨"或"跌"反馈结果时的脑部电位。结果: 观察到明显的反馈相关负波(feedback related negativity FRN)与P300成分，但未发现"作为"与"不作为"在两个成分上的显著差异，继而对"作为"与"不作为"两种情境下的差异波分析发现，在P300时间窗内，"作为"情境产生了更大的差异波。结论："作为"与"不作为"两种决策情境导致的"差"结果在FRN时间窗内差异不显著，但P300时间窗内"作为"情境诱发了更大的差异波，这可能与"作为"情境下更多的正性情绪体验相关。

Objective:compare the brain activations followed two choices of action and inaction.Methods:Withevent -related potentials(ERP),present study make subjects performance a mock -stock trading,and while the authorrecording the results of feedback-related negativity(FRN) and P300.Results:With four experimental conditions(purchase/rise,purchase/fall,not purchase/rise,and not purchase/fall),the results showed that there’s no difference between FRNand P300 amplitude with action and inaction.The difference wave shows no difference between action and inaction forFRN,but action with larger P300.Conclusion:There is no difference of FRN between action and inaction in this study,but action with more larger difference waves suggested more intense emotional activation.

基金项目：

湖南省社科基金项目(09YBB268)；湖南省研究生科研创新项目(CX2009B090)

作者简介：

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