读音和语义处理中双语被试脑功能的差异研究

利用功能性磁共振成像(fMRI)技术探讨双语被试语义和读音处理时脑活动的差异.实验使用汉语和日语中语义和读音处理相关实验刺激任务,通过两组被试各自判断任务中不同的脑激活情况探讨中日双语和日本人被试在语义和读音处理时脑活动的差异.结果表明对于中日双语被试,中文语义判断任务和中文读音判断任务相减,没有得到差异性脑区,而日文语义判断任务和日文读音判断任务相减得到了二者差异性脑区,主要表现在:右侧额叶前回(BA8/9),左侧纺锤状回(BA37)以及右侧颞叶(BA22/38);对于日本人被试,日文语义判断任务和日文读音判断任务相减得到二者差异性脑区,主要表现在:左侧颞上回(BA40)和左侧颞叶(BA22).

Differences in Brain Function Between Bilingual Subjects in the Phonological and Semantic Processing

Using functional magnetic resonance imaging (fMRI),much knowledge has been gained in understanding how the brain is activated during controlled experiments of language tasks in Chinese-Japanese bilinguals and Japanese sub-jects. In this study,we used fMRI to investigate the difference in bilingual by Chinese-Japanese bilingual and Japanese subjects in the semantic and phonological processing of brain activity. Study on the use of Chinese-Japanese bilingual and Japanese subjects,using Chinese or Japanese semantic or phonological judgment task,through the two groups of sub-jects their judgment task,discussion of bilingual Chinese and Japanese subjects differences between brain activity in se-mantic and phonological processing. Results show that no significant different brain area between Chinese semantic judg-ment task and Chinese phonological judgment task with Chinese-Japanese bilingual subjects,and Japanese semantic judg-ment task and Japanese phonological judgment task by subtracting the differences between the brain regions:the right frontal lobes (BA8/9),the left fusiform gyrus (BA37),the right temporal lobe (BA22/38);For the Japanese subjects, Japanese semantic judgment task and Japanese phonological judgment task is presupposed differences between the two brain regions:the left superior temporal gyrus (BA40) and the left temporal lobe (BA22).