Xiao Xiao, Zhang Qinglin, Jia Lei, Zhang Ye, Luo Junlong
School of Psychology, Ministry of Education, Southwest University, Chongqing, PR China.
Neuroreport. 2010 Jan 27;21(2):104-7. doi: 10.1097/WNR.0b013e32833499ff.
The neural correlates of cognitive control in a picture-word interference task were investigated in 13 healthy individuals using event-related potentials. The differences between the incongruent condition and the congruent condition were examined. Behavioral data showed that the task yielded a robust interference effect as indexed by a longer reaction time for the incongruent condition. Scalp event-related potential analysis revealed greater negative differences in N300 and N570 in the incongruent compared with the congruent condition. The results showed that there may be two cognitive control phases during conflict resolution in a picture-word interference task. N300 is a critical sign of conflict monitoring in the primitive stage, whereas N570 embodies the response conflict in the terminal stage.
利用事件相关电位，对13名健康个体在图词干扰任务中认知控制的神经关联进行了研究。考察了不一致条件和一致条件之间的差异。行为数据表明，该任务产生了显著的干扰效应，以不一致条件下更长的反应时间为指标。头皮事件相关电位分析显示，与一致条件相比，不一致条件下N300和N570的负向差异更大。结果表明，在图词干扰任务的冲突解决过程中可能存在两个认知控制阶段。N300是原始阶段冲突监测的关键标志，而N570体现了末期阶段的反应冲突。
