汉英双语者名词语义关系的脑电研究

A neurolinguistic study of semantic relations between Chinese and English bilinguals

双语大脑词库的语义表征和加工方式是大脑词库语义研究的重点。我们利用ERP技术,采用语义判断任务,考察了汉英双语者母语和二语大脑词库的语义加工情况。结果表明:1)母语汉语中具有并列关系的词语比上下位关系词语有显著增强的N400效应,表明在加工并列关系词语时消耗了更多的认知资源;2)与加工并列关系、功能关系和联想关系的词语相比,双语者二语词汇中所表现的上下位关系、整体—部分关系和范畴关系词语的语义联系更紧密,加工难度更小;3)汉英双语者对母语和二语词汇间不同语义关系的加工方式验证了双语大脑词库的混合表征理论。

The semantic representation and processing of bilingual brain lexicon is the focus of semantic research on brain lexicon. This study investigates the semantic processing of native and second language thesaurus in Chinese-English bilinguals using ERP and semantic judgment tasks. The results show that: 1) the N400 effect is significantly enhanced for words with juxtaposition in native Chinese than for words with contextual relationship, indicating that the processing of juxtaposition words consume more cognitive resources;2) compared with the processing of paratransit, functional and associative words, the semantics of the words with contextual, whole-part and categorical relations in the second language of bilinguals are closer and less difficult to process;and 3) Chinese-English bilinguals’ processing of different semantic relationships between native and second language words supports the mixed representation theory of bilingual brain lexicon.