不同效价情绪面孔阈下情绪启动效应的事件相关电位erp研究

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1、不同效价情绪面孔闽下情绪启动效应的ER-P研究回，而启动效应的第三阶段可能与扣带回的活动有关。综合以上研究，本论文发现，不同效价情绪面孔的两种阂下情绪启动效应有着相似的认知神经机制，都是由于闺下启动刺激影响了对目标刺激的无意识情绪探测，知觉加工和对情绪的理解评价所致。对于目标刺激的情绪加工不仅仅受到启动刺激的影响，同时也受到了目标刺激本身情绪特征的调节。本研究结果将丰富我们对无意识和情绪的认知神经机制这一前沿问题的认识;对于情绪调节、心理治疗等应用研究具有指导意义;研究结果还将有助于各种精神病(所有精神疾病或多或少是由于无意识加工和

2、主观体验关系的紊乱)的诊断与治疗。关键词:阂下知觉，情绪启动，脑，事件相关电位妙不同效价情绪面孔闪下情绪启动效应的ERP研究ABSTRACTSubliminalAffectivePrimingEffeetbyFaeesWithDifferentValenee:evideneefromevent一relatedPotentialsThebrainreceivestensofmillionsofinPutswithdifferentlevelsofemotionalO犷UIthemuneonseiously.signifieanee.H

3、owever，weexPerieneethemajority0l(lNevertheless，theseinPutscansignifieantlyinflueneebehavior.StudiesinsubliminalaffeetivePriminghavefoundthatthesubliminaleffeet15veryPowerful.Subliminalaffective如minghastwodifferenimeanings:(l)FirstmeaningreferstothePhenomenonwheresublim

4、inalPresentationofaPrimeobjectshiftssubsequentaffeetiveevaluationofthesuPraliminalobjectintheaffeetivedireetionofthePrimeobjeet.(2)SecondmeaningreferstothePhenomenonoecurswhentheProcessingofaPositivestimulus(e.g.，love)15fasterandmoreaecuratewhenit15PreeededbyaPositives

5、timulus(e.g.，sunshine)ratherthananegativestimulus(e.g.，death).Inthisstudy，thedimensionofarousalwaseontrolledandtwogrouPsofPositiveandnegativefaeeswereseleetedasPrimingstimuli.Behavioralanalyseswereeolnbinedwithreeordingsofevent一relatedPotential(E即)toinvestigatetheneura

6、lmeehanismsofthetwodi月笼rentkindsofsubliminalaffeetivePrimingeffect.ThefirstkindofsubliminalaffectivePrimingwasstudiedt】lroughexPerimentlbyrecordingERPtoambiguousneutralfaeesPreeededbysubliminalPresentedPositiveornegativePrimefaees.BehavioralresultsshowedthatPositiveand

7、negativePrimefaeesledtovalanee一eonsistentbiasesinaffeetivejudglllentsofambigUousneutralfaees.ERPdatashowedthatsubliminalPrimesdifferentiallyinflueneedanteriorN100，N300andPosteriorP17OPotentials，withlargeramPlitudesinnegativePrimingtrials.TheseresultssuPPorttheeonelusio

8、nthattheearlyPercePtualanalysisofobjeets，aswellasevaluationandseleetionofobjeets，15affeetedbysublil二inalaffeetiveinfo