摘要
目的:比较汉词与图画材料再认过程中的事件相关电位(ERP)表现并探讨其脑机制。方法:使用经典"学习-再认"实验模式对21名大学生进行测验,同时记录EEG,离线处理后对汉词及图画再认诱发的ERP波形主要成分及新旧效应进行比较。结果:两种材料的再认均诱发出了明显的新旧效应。顶区新旧效应头皮分布基本一致,但图画再认该效应波幅大于汉词再认;两种材料诱发的额区新旧效应有所不同,图画再认该效应为正走向,而汉词再认此效应表现为负走向趋势。结论:汉词与图画再认既存在某种共同的神经加工机制,又分别涉及一些特异性的神经活动模式。
This is a study of the ERP correlates of memory retrieval for two types of material： Chinese words and common object. 21 volunteers were assigned two recognition tasks in which color photographs of common objects and meaningful words consisting of two Chinese characters were used respectively. The ERP correlates of recognition memory were recorded from 20 scalp sites. We found that stimulus ERPs elicited by recognized items contained a parietally distributed positive shift （the parietal old/new effect）, and the old/new effect of pictures was greater than that of words. The frontal old/new effects elicited by two classes of items showed significant differences. The frontal old/new effectsof Chinese words demonstrated a negative shift, while those of pictures were still positive-wise as previous research reported. Our conclusion is that the recognition of Ch/nese words and pictures share some of the common neural substrates, but there are still some differences in the memory processing mechanism of the two classes of stimuli.
出处
《心理科学》
CSSCI
CSCD
北大核心
2007年第4期834-838,共5页
Journal of Psychological Science
关键词
再认
事件相关电位(ERP)
新旧效应汉词
图画
recognition, event-related potentials（ERP）, old/new effects, Chinese words, pictures
作者简介
王湘．女。E-mail：Wang0916xia@yahoo．com.cn
