Yin Qinqing, Qiu Jiang, Zhang Qinglin, Wen Xiaohui
Key Laboratory of Cognition and Personality, Ministry of Education, School of Psychology, Southwest University, Chongqing, China.
Neuroreport. 2008 Mar 26;19(5):575-8. doi: 10.1097/WNR.0b013e3282f97881.
This study used event-related potentials (ERPs) to investigate the electrophysiological correlates of cognitive conflict in audiovisual integration during an audiovisual task. ERP analyses revealed: (i) the anterior N1 and P1 were elicited in both matched and mismatched conditions and (ii) audiovisual mismatched answers elicited a more negative ERP deflection at 490 ms (N490) than matched answers. Dipole analysis of the difference wave (mismatched minus matched) localized the generator of the N490 to the posterior cingulate cortex, which may be involved in the control and modulation of conflict processing of Chinese characters when visual and auditory information is mismatched.
本研究使用事件相关电位（ERP）来探究视听任务中视听整合过程中认知冲突的电生理相关性。ERP分析显示：（i）在匹配和不匹配条件下均诱发了前部N1和P1；（ii）视听不匹配答案在490毫秒时诱发的ERP偏转（N490）比匹配答案更负向。对差异波（不匹配减去匹配）进行偶极子分析，将N490的起源定位到后扣带回皮层，当视觉和听觉信息不匹配时，该区域可能参与汉字冲突处理的控制和调节。
