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目的研究健康成人汉语成语尾字匹配与非匹配N400的变化。方法入选35名20～55岁健康成人右利手受试者,进行汉语成语匹配与非匹配N400的实验研究。结果 N400基本波型分布于Fz、Cz和Pz等脑区。分别获得健康成人同音异形异义、异音形似异义、异音异形同义及异音异形异义汉语成语尾字匹配与非匹配的N400潜伏期和波幅平均值。结论汉语成语尾字匹配和非匹配N400的改变与字词认知中的语义有关。
Objective To study the changes of the matched and unmatched N400 in Chinese idioms for healthy adults. Methods 35 right-handed healthy subjects from 20 to 55 years old were enrolled in this study. Experimental studies on Chinese idioms matching and non-matching N400 were conducted. Results N400 basic waveforms were distributed in brain regions such as Fz, Cz and Pz. The average N400 latency and amplitude of matched and unmatched Chinese idioms were obtained respectively for homophobic homophones, heterophone homophones, heterophone homophones and heterophobic homophones. Conclusions The change of Chinese idioms’ tail-match and non-match N400 is related to semantic meaning in word cognition.