PSYCH OpenIR  > 健康与遗传心理学研究室
Alternative TitleFrequency,Regularity and Interaction in silent reading of Chinese Characters:An fMRI Study
Thesis Advisor翁旭初
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline认知心理学
Keyword功能磁共振成像(fMRI ) 默声阅读 汉字 频率效应 规则性效应

    方法:8名非语言专业大学生在扫描(1 .ST西门子磁共振仪)过程中执行汉字默声阅读任务。以80个形声汉字作为刺激材料,其中高频规则字、高频不规则字、低频规则字、低频不规则字各20个,用视觉方式随机呈现。
    结果:左侧额中回(BA9 )、左侧额下回、辅助运动区((SMA)、左侧颗下回后部、双侧纹外皮层表现出频率效应,即阅读低频汉字时的激活强于高频汉字。

Other Abstract

    Objective:transformation In  order  to  investigate  the  neural  substrates
of  orthography  to functional magnetic phonology in Chinese language processing, event-related resonance imaging was used to characterize brain activation correlated with the effects of frequency and regularity and their interactions in silent reading of Chinese characters.
    Methods:  Eight university students were instructed to silently read visually presented Chinese characters while being scanned with a 1.5-Tesla MRI Siemens scanner. Twenty regular high frequency, irregular high frequency,regular low frequency, and irregular low frequency characters were used.  Each type was randomly presented.
    Results:   Frequency effect was observed in the left middle frontal gyros, left inferior frontal gyros, left inferior temporal gyros and bilateral extrastriate areas. Activation in these regions was significantly stronger during reading low frequency characters than reading high frequency characters.Much stronger activation was found in the right insula during reading irregular characters than during reading regular characters. Interaction effect was found in the left anterior insula, anterior and posterior cingulate cortex,in which irregular low frequency characters elicited strongest activation.
    Conclusions: Reading Chinese characters elicited a number of regions, including the left frontal and temporal cortex, insular,and with inferior temporal and occipital  regions, which  were also implicated in imaging studies English words, suggesting that There are large overlaps in activation  during reading logographic Chinese  characters  and  alphabetic  English  words.However, we also found several regions that appear to be specifically related to processing of Chinese characters.  Regularity effect in the right insular and regularity vs. frequency interaction in the cingulate cortex found in the present study has not been reported in studies with English word reading tasks. Whether these regions are specialized for Chinese language processing remains to be further investigated.

Document Type学位论文
Recommended Citation
GB/T 7714
谭向杰. 默读条件下汉字频率、规则性效应及其交互作用的功能磁共振成像[D]. 北京. 中国科学院研究生院,2004.
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