FN400和LPC对熟悉性和回想的特异性指向分析  

Analysis of the Specific Index of FN400 and LPC to Familiarity and Recollection

作　　者：于明阳 姜英杰 Yu Mingyang;Jiang Yingjie(School of Psychology,Northeast Normal University,Changchun,130024)

机构地区：[1]东北师范大学心理学院,长春130024

出　　处：《心理科学》2021年第2期302-308,共7页Journal of Psychological Science

基　　金：国家社科基金一般项目“中国留守儿童共情发展特点及形成机制研究”(19BSH113)的资助。

摘　　要：双加工理论认为熟悉性和回想是情景记忆的两个独立过程,其重要证据是ERP研究中FN400和LPC可以分别指示熟悉性和回想。但也有研究证明FN400是概念启动和熟悉性共同作用的结果,而LPC也不能准确的反映回想加工,因此,将其作为双加工理论证据的可靠性需进一步讨论。未来需进一步明确概念启动和熟悉性影响FN400的前提条件,并在提高生态效度和控制额外变量的同时明晰LPC的指向性,同时探究熟悉性和回想在再认过程中的具体作用方式。Two cognitive processes contribute to memory recognition,namely recollection and familiarity.The Dual process theory supposed that recognition can be decomposed into two distinct processes that reflect the separate mnemonic mechanisms of familiarity and recollection.Previous electrophysiology researches commonly believed FN400 and LPC index to familiarity and recollection,respectively.The FN400 is more negative for new than old stimuli over front-centrally,between 300-500 ms,which has been associated with familiarity.The LPC is a later positive old/new difference maximal over centroparietal channels between 500-800 ms post-stimulus,which has been associated with recollection.The FN400 similarly to the N400 in timing and response pattern,however,some studies have proven that there are functional differences between the FN400 and N400.In the previous researches,the measurement of familiarity was mainly done by a recognition test,which was a measurement of explicit memory,ignoring the influence of implicit memory on recognition.There was a great overlap between familiarity and conceptual priming in the experimental operation.Therefore,the FN400 may also be the result of the co-occurrence of conceptual priming and familiarity.Therefore,to eliminate the interference of conceptual priming on FN400,the researchers used meaningless materials to separate familiar processing.It should be noted,however,that some researchers have recently posited that FN400 is an index of the interaction of conceptual priming and familiarity,and the specific role of the two in the production of FN400,remains to be further explored.In addition to the intense discussion on the significance of FN400,some researchers also believe that the LPC is related to familiarity.It is generally believed that only recollection supports source information retrieval,but studies have proven that familiarity is also beneficial to remember source information,which indicates that recollection and familiarity processing may be included in source information retrie

关 键 词：双加工理论 FN400 LPC 熟悉性 回想 

分 类 号：B842.3[哲学宗教—基础心理学]