中文摘要：

该研究利用事件相关电位技术（ERPs），采用以汉字为实验材料的学习一再认范式，考察了语义相似性下回忆和熟悉性的分离。本实验结果表明：熟悉性效应主要体现在330—430ms的额区，而回忆效应主要体现在430—600ms的中央区和顶区。本实验在以汉字为实验材料的情况下证明了，早期额区的N400新旧效应反映了熟悉性，晚期顶区LPC新旧效应反映了回忆，从汉语材料的角度，为双加工过程假说提供了新的证据。

英文摘要：

Results from cognitive, neuropsychological and neuroimaging studies of human memory indicate that recognition memory performance reflected two distinct memory processes： recollection and familiarity. Recollection involved the retrieval of specific details associated with something recognized; familiarity was an assessment of the overall similarity between a test item and all study-list information in memory. Previous ERP studies of the recollection and familiarity suggested that： during 300 500ms, FN400 ERP old new effect was related to familiarity, and during the 400- 800ms, the parietal ERP old new effect was related to recollection. However, this hypothes~s had not yet to be confirmed. The purpose of our studies was to explore the dissociation of recoUection from familiarity. Using Event-related Potentials, the present study adopted Chinese characters as stimuli. Subjects were seventeen undergraduate students in which three subjects were rejected because of lacking of the humor of superposition. The size of statistical sample was fourteen, in which there were eight girls and six boys. The average age of the sample was twenty point one years old. All the subjects were right-handed with normal vision or corrected visual acuity. All the subjects had no history of mental illness or history of brain diseases. We gave the certain degree of compensation to subjects after the experiment. This study adopted a ＂study-test＂ pattern and the material of Chinese characters to explore the dissociation of recollection from familiarity in condition of conceptual-similarity using event-related potential （ERPs） measurements. The task of the studying phase was to remember the words that appeared on the screen, but not pressing any key. There were three types of words in the testing stage including old words, similar words （conceptualsimilarity with old words） and new words （not conceptual-similarity with old words）. The task of the testing phase was to make old/ new judgments. The study analyzed three types o