中国行为医学科学
中國行為醫學科學
중국행위의학과학
2008年
12期
1112-1114
,共3页
结果评价%预期强度水平%事件相关电位
結果評價%預期彊度水平%事件相關電位
결과평개%예기강도수평%사건상관전위
Outcome evaluation%Intensity levels of the expectation%Event-related potential
目的 探讨结果评价是否受预期的强度水平影响.方法 研究对象为16名在校大学生,使用NeuroScan ERP工作站采集、比较归因任务中,行为结果在四种预期强度水平下诱发的反馈相关负波(FRN),并对其进行偶极子溯源分析.结果 ①FRN由失钱的反馈诱发,得钱反馈后无明显FRN.②归责失钱诱发的FRN波幅(-6.24μV)大于归功失钱诱发的FRN波幅(-4.67μV),差异具有显著性(F(1,15)=26.42,P<0.001);归因对象在FRN波幅上主效应不显著.③FRN波幅在Fz区域最大[从Fz到Pz依次为:(-7.55μV,-6.54μV,-5.20μV,-4.16μV,-3.83μV],差异具有显著性(F(2,8)=8.12,P<0.01).④偶极子溯源分析结果显示FRN的发生源可能位于扣带同附近(Talairach坐标:-16.3,-73.1,13.3;残差为1.98%).结论 FRN对负性行为结果敏感,且其波幅受预期强度水平影响,它可能反映了认知系统对不符合预期、且比预期糟的行为结果的评价加工.
目的 探討結果評價是否受預期的彊度水平影響.方法 研究對象為16名在校大學生,使用NeuroScan ERP工作站採集、比較歸因任務中,行為結果在四種預期彊度水平下誘髮的反饋相關負波(FRN),併對其進行偶極子溯源分析.結果 ①FRN由失錢的反饋誘髮,得錢反饋後無明顯FRN.②歸責失錢誘髮的FRN波幅(-6.24μV)大于歸功失錢誘髮的FRN波幅(-4.67μV),差異具有顯著性(F(1,15)=26.42,P<0.001);歸因對象在FRN波幅上主效應不顯著.③FRN波幅在Fz區域最大[從Fz到Pz依次為:(-7.55μV,-6.54μV,-5.20μV,-4.16μV,-3.83μV],差異具有顯著性(F(2,8)=8.12,P<0.01).④偶極子溯源分析結果顯示FRN的髮生源可能位于釦帶同附近(Talairach坐標:-16.3,-73.1,13.3;殘差為1.98%).結論 FRN對負性行為結果敏感,且其波幅受預期彊度水平影響,它可能反映瞭認知繫統對不符閤預期、且比預期糟的行為結果的評價加工.
목적 탐토결과평개시부수예기적강도수평영향.방법 연구대상위16명재교대학생,사용NeuroScan ERP공작참채집、비교귀인임무중,행위결과재사충예기강도수평하유발적반궤상관부파(FRN),병대기진행우겁자소원분석.결과 ①FRN유실전적반궤유발,득전반궤후무명현FRN.②귀책실전유발적FRN파폭(-6.24μV)대우귀공실전유발적FRN파폭(-4.67μV),차이구유현저성(F(1,15)=26.42,P<0.001);귀인대상재FRN파폭상주효응불현저.③FRN파폭재Fz구역최대[종Fz도Pz의차위:(-7.55μV,-6.54μV,-5.20μV,-4.16μV,-3.83μV],차이구유현저성(F(2,8)=8.12,P<0.01).④우겁자소원분석결과현시FRN적발생원가능위우구대동부근(Talairach좌표:-16.3,-73.1,13.3;잔차위1.98%).결론 FRN대부성행위결과민감,차기파폭수예기강도수평영향,타가능반영료인지계통대불부합예기、차비예기조적행위결과적평개가공.
Objective To reveal the nature of the outcome evaluation reflected by event-related potentials in evaluation process.Methods 16 College students were required to make attribution about their performance during a task,event-related potentials were recorded by NeuroScan ERP and dipole source location analyzed by Curry4.6.Results ①The feedback-related potential (FRN) was elicited by the negative outcomes.②The amplitude of the FRN was larger on the condition of fail to attribute the responsibility (-6.24μV) than the contribution (-4.67μV),there was significantly statistical meaning(F(1,15)=26.42,P<0.001).③The overall FRN magnitudes were more negative-going at Fz(+7.55μV) than Fcz(-6.54μV),Cz(-5.20μV),CPz(-4.16μV) and Pz(-3.83 μV),there was significantly statistical meaning(F(2,8)=8.12,P<0.01).④Dipole source location analysis showed that the neural generator of FRN may be the anterior cingulated cortex (ACC)(Talairach coordinates:-16.3,-73.1,13.3;residual variance:1.98%).Conclusion The feedback-related potential (FRN) is sensitive to the negative outcome, and affected by the intensity levels of the expectation for the outcome.FRN may reflect a evaluation process that the actual outcome is unexpected and worse than the expectation.
