生物医学工程研究2024，Vol.43Issue(2)：144-150,7.DOI:10.19529/j.cnki.1672-6278.2024.02.09
冲突监控中兴奋与抑制过程的事件相关电位N450的研究
Event-related potential N450 study on excitement and inhibition in conflict monitoring
摘要
Abstract
To investigate the effects of excitation and inhibition on N450 during conflict monitoring in healthy subjects doing the Stroop variant(word sense-duration task).46 undergraduate students were chosen and randomly assigned to the duration estimation task group(n=22)and the consistency judgment task group(n=24).Inhibition vs.excitation and inhibition were then induced in word sense,respectively.Event-related potentials(ERPs)N450 were then researched in both groups under the conditions between word sense and duration judgment the conflict and non-conflict.The results showed that:(1)In the conflict condition,reaction times signifi-cantly increased in both groups;meanwhile,the duration estimation task group's correct rate dramatically fell(P<0.05);(2)There was a significant variation in the amplitude of the N450 wave under the two conditions when word sense inhibition and excitation were induced simultaneously(P<0.05);(3)The sLORETA trace data showed that conflict processing was linked to both frontoparietal net-work and cingulate gyrus activation.The study indicates that the excitatory and inhibitory components of the stimulus have an impact on both the event-related potential N450 and the reactions of the subjects during stimulus conflict.关键词
Stroop/认知控制/事件相关电位/冲突监控/N450Key words
Stroop/Cognitive control/Event-related brain potentials/Conflict monitoring/N450分类
医药卫生引用本文复制引用
王爱莉,贾美雪,随力..冲突监控中兴奋与抑制过程的事件相关电位N450的研究[J].生物医学工程研究,2024,43(2):144-150,7.基金项目
上海理工大学科技发展项目(2019KJFZ239,2020KJFZ232). （2019KJFZ239,2020KJFZ232）
