摘要
反事实思维指在心理上对过去已经发生的事情进行否定,进而构建一种可能性假设的思维活动,是"实际结果"和"假设结果"比较的假设思维过程.反事实思维根据比较方向的不同,分为上行、下行反事实思维.本研究利用事件相关电位技术(ERP)高度精确的时间分辨率,通过决策情境的简单赌博任务,操纵部分反馈和全部反馈,考察了反事实思维过程的神经电生理证据.结果表明,上行反事实思维在FRN和P300成分得到反映,下行反事实思维仅影响FRN;对上行、下行反事实思维的溯源分析结果表明定位在前扣带回(ACC).因此我们认为,FRN和P300是对反事实思维敏感的ERP成分,且ACC可能是调节反事实思维的重要神经结构.
Counterfactual thinking occurs when an individual experiences thoughts that ignore what has happened in the past,and gener-ates a hypothesis which comparing ＂what is＂ with ＂what might have been＂. Counterfactual thinking can be classified into up-ward and downward counterfactual thinking based on the direction of the comparison involved. The present study used an event-related potential （ERP） recording protocol with high temporal resolution to measure neurophysiological activity while participants performed a simple gambling task in which the feedback mode was manipulated （partial and complete feedback）. Our results showed that both the amplitudes of FRN （feedback-related Negativity） and P300 enhanced during reflected upward counterfactual thinking processes,while only the FRN reflected downward counterfactual thinking. Moreover,dipole analysis indicated that the dipole was located in the anterior cingulate cortex （ACC）. This suggests that the FRN and P300 are both sen-sitive to counterfactual thinking,and that the ACC may be an important neural structure in the modulation of counterfactual thinking.
出处
《科学通报》
EI
CAS
CSCD
北大核心
2010年第12期1113-1121,共9页
Chinese Science Bulletin
基金
国家自然科学基金(批准号:30770727,30800292)资助项目
