摘要
通过事件相关电位(ERP)技术,探讨了金钱启动影响被试选择活动类型的脑内时程动态变化,结果发现:金钱启动组的被试更倾向于选择集体活动;相对于非金钱启动组,金钱启动条件下的被试在500~650ms的时窗内,选择"集体活动"比选择"单独活动"诱发了一个正的ERP波形;差异波的地形图显示,该成分在脑的左前部有更强的激活;进一步的偶极子溯源分析发现,该成分主要起源于左额上回,这可能表明金钱启动与"自我"的激活有关.
Using the event-related potentials(ERP) technology,the authors studied the dynamic changes in the brains of the subjects that revealed the influences of money prime on their choice of collective-individual activities.The results showed that the subjects primed by money were more likely to choose a collective activity and that under the money prime conditions,the collective activities elicited a more positive ERP wave than the individual activities in the stage of 500~650 ms.The relief map of difference waves revealed a strong activation in the left forebrain.A dipole tracing analysis showed that the positive component mainly originated in the left superior frontal gyrus,thus indicating that money prime might be related to a higher cognitive processing and to the activation of the "self".
出处
《西南大学学报(自然科学版)》
CAS
CSCD
北大核心
2011年第12期162-168,共7页
Journal of Southwest University(Natural Science Edition)
基金
重庆市哲学社会科学特别委托项目(2010TBWT-1-02
2010TBWT-1-04)