FN400和N400是相同的ERP成分:来自图形材料的证据  

The FN400 Is Identical to The N400: Evidence from Picture Stimuli

作　　者：李兵兵 郭春彦 Li Bingbing;Guo Chunyan(School of Education Science,Jiangsu Normal University,Xuzhou,221116;Beijing Key Laboratory of Learning and Cognition,School of Psychology,Capital Normal University,Beijing,100048)

机构地区：[1]江苏师范大学教育科学学院,徐州221116 [2]北京市“学习与认知”重点实验室,首都师范大学心理学院,北京100048

出　　处：《心理科学》2020年第6期1282-1288,共7页Journal of Psychological Science

基　　金：国家自然科学基金项目(31700954,31671127);江苏省自然科学基金项目(BK20170234)的资助。

摘　　要：本研究通过比较记忆编码阶段语义启动引起的N400效应和提取阶段熟悉性引起的FN400效应的地形图考察图形材料诱发的N400和FN400是否是相同的ERP成分。实验结果发现,语义启动引起的N400效应和熟悉性引起的FN400效应的地形图没有显著差异。这说明图形材料诱发的FN400和N400是相同的ERP成分,两者都反映了语义加工。本研究为FN400效应反映了语义启动而不是熟悉性的观点提供了新的实验证据。Event related potential(ERP) literature on recognition memory has found that recollection is associated with the LPC old/new effect, which occurs around 500~ 800 ms at posterior electrodes, and familiarity is associated with the FN400 old/new effect, which occurs around 300~500 ms at anterior electrodes. The view that the FN400 reflects familiarity has been challenged by some recent studies. One of the evidences against the view that the FN400 reflects familiarity is that the FN400 is not different from the N400, which reflects semantic processing. However, this result was challenged by some later studies that found the FN400 was different from the N400. The present study investigated the relationship between the FN400 and the N400 using picture of visual objects as stimuli and ERP technology.The present study used the masked conceptual priming paradigm in the study phase and the remember/know(R/K) paradigm in the test phase. 200 pictures were presented in the study phase. Half were preceded by a masked semantically related picture(related condition), and half were preceded by a masked semantically unrelated picture(unrelated condition). Subjects performed an R/K recognition memory test in the test phase. 100 studied pictures and 50 unstudied pictures were presented in each test block(two blocks in total). Continuous EEG was recorded using the NeuroScan system, with 64 electrodes embedded in a hat, in both the study and test phase(band pass:.05~100 Hz, 30 Hz low pass filtered in offline processing). Epochs were created beginning 100 ms prior(serve for baseline correction) to and ending 900 ms after the onset of stimulus presentation in both the study and test phase. The FN400 familiarity effect was defined as the ERP difference between K hits and correct rejections at 300~500 ms in the test phase and the N400 conceptual priming effect was defined as the ERP difference between related and unrelated condition at 300~500 ms in the study phase.The behavioral results revealed that masked conceptual priming facilitated

关 键 词：熟悉性 语义启动 FN400 N400 

分 类 号：B842.3[哲学宗教—基础心理学]