心理与行为研究
心理與行為研究
심리여행위연구
STUDIES OF PSYCHOLOGY AND BEHAVIOR
2014年
5期
583-587
,共5页
侧抑制任务%反应冲突%刺激冲突%事件相关电位( ERPs)
側抑製任務%反應遲突%刺激遲突%事件相關電位( ERPs)
측억제임무%반응충돌%자격충돌%사건상관전위( ERPs)
flanker task%response conflict%stimulus conflict%event-related potential
采用事件相关电位技术( ERP),用侧抑制任务探讨了刺激和反应冲突的脑内时程动态变化。行为数据表明,冲突条件的反应时显著长于无冲突条件,表现出明显的干扰效应;脑电数据表明,在300-450ms内,反应冲突比无冲突诱发了一个更负的 ERP成分( N300-450),主要分布于额顶部,偶极子溯源分析发现,这一负成分可能主要源于ACC;而刺激冲突与无冲突相比在350-450ms内,也诱发了一个更负的ERP成分(N350-450),该负成分可能主要源于丘脑附近。这一结果表明,刺激与反应冲突所涉及的大脑机制可能并不相同。
採用事件相關電位技術( ERP),用側抑製任務探討瞭刺激和反應遲突的腦內時程動態變化。行為數據錶明,遲突條件的反應時顯著長于無遲突條件,錶現齣明顯的榦擾效應;腦電數據錶明,在300-450ms內,反應遲突比無遲突誘髮瞭一箇更負的 ERP成分( N300-450),主要分佈于額頂部,偶極子溯源分析髮現,這一負成分可能主要源于ACC;而刺激遲突與無遲突相比在350-450ms內,也誘髮瞭一箇更負的ERP成分(N350-450),該負成分可能主要源于丘腦附近。這一結果錶明,刺激與反應遲突所涉及的大腦機製可能併不相同。
채용사건상관전위기술( ERP),용측억제임무탐토료자격화반응충돌적뇌내시정동태변화。행위수거표명,충돌조건적반응시현저장우무충돌조건,표현출명현적간우효응;뇌전수거표명,재300-450ms내,반응충돌비무충돌유발료일개경부적 ERP성분( N300-450),주요분포우액정부,우겁자소원분석발현,저일부성분가능주요원우ACC;이자격충돌여무충돌상비재350-450ms내,야유발료일개경부적ERP성분(N350-450),해부성분가능주요원우구뇌부근。저일결과표명,자격여반응충돌소섭급적대뇌궤제가능병불상동。
In the present study,the event-related potential( ERP) and flanker task was used to investigate the neural cor-relation of response conflict and stimulus conflict.Compared with the no conflict condition,behaviourally, there was obvious interference effect of the two conflict conditions.The brain electricity data showed that:response conflict e-licited a more negative ERP deflection than did the no conflict task in the time window from 300-450ms, and di-pole source analysis of difference wave indicated that one generator localized in ACC.Stimulus conflict elicited a more negative ERP deflection than did the no conflict task in the time window from 350-450ms, and dipole source analysis of difference wave indicated that one generator localized in thalamus.This result indicated that different conflicts may related to different brain mechanism.