从记忆编码加工看人脑中的基本语言单位——一项对汉语双音节语言单位的ERPs研究

Basic Language Unit in the Brain: An ERPs Study on Memory Encoding of Chinese Bisyllabic Units

运用事件相关电位技术,采用"学习-再认"范式,从学习记忆的编码加工角度,以单纯词、合成词和短语为考察对象,探讨人脑中基本语言单位的问题。实验结果显示,短语比合成词诱发了更正的P2成分,词的再认反应时显著快于短语。大脑对词与短语的记忆编码加工机制不同,与短语相比,大脑词库中存储的基本语言单位更应该是词,词的语素构成数量影响其记忆痕迹形成的强度。

The paper investigates the basic units in Chinese mental lexicon by an ERPs experiment based on the study-test Paradigm. The ERPs results show that the phrases elicit more positive P2 component while they are memorized and encoded, but the reaction time of words is shorter than phrases. In conlusion, the results from the experiment suggest that the basic units in the mental lexicon are rather words than phrases. On the other hand, the number of the morphemes which compose of words may have effect on the memory trace in the brain.