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心理学报
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汉字识别中部件结合率的作用:ERP研究
吴岩1;王协顺1;陈烜之2
(1东北师范大学心理学院, 长春 130024) (2香港中文大学心理系, 香港)
ERP effects of Radical Combinability in Chinese Character Recognition
WU Yan1; WANG Xieshun1; CHEN Hsuan-chih2
(1 School of Psychology, Northeast Normal University, Changchun 130024, China) (2 Department of Psychology, Chinese University of Hong Kong, Hong Kong, China)
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摘要 

以汉字为实验材料, 实验操纵两种部件结合率:携带位置信息的部件结合率(position-specific radical combinability, SRC)和不携带位置信息的部件结合率(position-general radical combinability, GRC)。实验中要求被试进行方位判断的同时记录被试脑电的变化。其中, 实验1以假字作为填充刺激, 结果发现SRC的变化引发P200效应, 而GRC的变化引发了大脑半球右侧化偏向的N400效应。实验2以简单几何图形作为填充刺激, 结果发现SRC所引发的P200效应消失了, 但GRC所引发的大脑半球右侧化偏向的N400效应保持稳定。结果说明部件结合率可以在汉字加工中产生作用, 但是携带位置信息的部件结合率在汉字加工中容易受到假字所引发的注意偏向的影响; 而不携带位置信息的部件结合率在汉字加工中的作用相对稳定。

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吴岩
王协顺
陈烜之
关键词 部件部件结合率汉字识别ERPs    
Abstract

Prior research on sublexical processing in Chinese character recognition has almost consistently found that radicals were involved in lexical access. However, it is still controversial about the question of how radicals were accessed. For example, it remained unclear that whether sublexical processing relied on radical position information. Close examination to previous studies, we found material compositions might be an important factor that accounted for the different effects of radical positions in lexical access. For example, studies in which illegal characters were used as fillers showed strong positional effects. In contrast, studies in which illegal characters were not employed demonstrated the significant effects of position-general radicals instead of position-specific radicals. Following this argument, the present study was conducted with two purposes. First, by manipulating radical combinability, we aimed to investigate the roles of position-general and position-specific radicals in Chinese character recognition. Second, we examined the question of whether the existence of illegal characters would influence effects of position-specific radicals by changing the composition of materials. We recorded participants’ brain responses using event-related brain potentials. Two types of radical combinability were manipulated: the number of characters containing a specific radical at a particular position (i.e., position-specific radical combinability, SRC), and the number of characters containing a specific radical irrespective of position (i.e., position-general radical combinability, GRC). Orientation decision task was employed, in which a stimulus (a character or filler) was not presented at the center of the screen, but slightly to the right or the left. The participants were required to judge whether the target stimulus appeared on the right or the left, relative to the fixation at central of the screen. This procedure would not draw participants’ attention to orthographic information and make characters process implicitly. In addition, we manipulated the type of fillers across different experiments, with Experiment 1 employing illegal characters as fillers, whereas Experiment 2 using geometric figures as fillers. Results revealed that in the implicit task, effects of GRC appeared to be stable. More specifically, no matter which types of fillers were used (i.e., illegal characters or geometric figures), characters with high GRC evoked a larger right-brain lateralized N400 effect as compared with the items with low GRC. However, effects of SRC were influenced by material compositions. When using illegal characters as fillers, Characters with low SRC elicited a larger P200 than their high SRC counterparts. However, when replacing illegal characters with geometric figures, the P200 effect disappeared. These findings confirm the role of radical combinability in Chinese character recognition. Findings of the present study also suggest that the role of GRC might be relatively stable across different materials, while the effect of SRC might be enlarged by the existence of illegal characters. We argued that this might be due to the fact that illegal characters were generated by violating one or some of Chinese orthographic rules, which may sensitize participants to orthographic information. Radical position, as an important feature of Chinese orthography, might be over attended.

Key wordsradical    radical combinability    Chinese character recognition    ERPs
收稿日期: 2014-08-26      出版日期: 2015-02-25
基金资助:

东北师范大学科学研究基金(中央高校基本科研业务费)项目成果(项目批准号:10QNJJ020)。

通讯作者: 吴岩, E-mail: wuy399@nenu.edu.cn; 陈烜之, E-mail: hcchen@psy.cuhk.edu.hk    
引用本文:   
吴岩;王协顺;陈烜之. 汉字识别中部件结合率的作用:ERP研究[J]. 心理学报, 10.3724/SP.J.1041.2015.00157.
WU Yan; WANG Xieshun; CHEN Hsuan-chih. ERP effects of Radical Combinability in Chinese Character Recognition. Acta Psychologica Sinica, 2015, 47(2): 157-166.
链接本文:  
http://journal.psych.ac.cn/xlxb/CN/10.3724/SP.J.1041.2015.00157      或      http://journal.psych.ac.cn/xlxb/CN/Y2015/V47/I2/157
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