Item-specific and generalization effects on brain activation when learning Chinese characters
Item-specific and generalization effects on brain activation when learning Chinese characters
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DOI：
10.1016/j.neuropsychologia.2007.09.010
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发表时间：
2008-01-01
期刊：
影响因子：
2.6
通讯作者：
Peng, Dan-Ling
中科院分区：
文献类型：
--
作者：
Deng, Yuan;Booth, James R.;Peng, Dan-Ling
本研究采用功能磁共振成像（fMRI）技术研究了英语学习者汉字字义学习过程中的神经变化。我们研究了训练字符的项目特定学习效果，以及语义知识对新迁移字符的泛化，这些新迁移字符与训练字符共享语义词根（字符的一部分，提供了单词含义的线索，例如水为湖）。行为结果表明，获得的语义知识提高了训练和转移字符的性能。神经影像学结果表明，左梭状回在汉字字形信息的视觉加工中起着中枢作用。左上级顶叶皮层似乎在学习字符的视觉空间方面起着至关重要的作用，因为它显示出与学习相关的减少，从早期到后期的行为改善与训练字符的学习，并与更好的长期保留的迁移字符。额下回似乎与检索和操纵语义表征的效率有关，因为对于训练的字符，存在与学习相关的降低，并且这种降低与从学习早期到后期的更大的行为改善相关。(c)2007爱思唯尔有限公司出版
Neural changes related to learning of the meaning of Chinese characters in English speakers were examined using functional magnetic resonance imaging (fMRI). We examined item specific learning effects for trained characters, but also the generalization of semantic knowledge to novel transfer characters that shared a semantic radical (part of a character that gives a clue to word meaning, e.g. water for lake) with trained characters. Behavioral results show that acquired semantic knowledge improves performance for both trained and transfer characters. Neuroimaging results show that the left fusiform gyrus plays a central role in the visual processing of orthographic information in characters. The left superior parietal cortex seems to play a crucial role in learning the visual-spatial aspects of the characters because it shows learning related decreases for trained characters, is correlated with behavioral improvement from early to late in learning for the trained characters, and is correlated with better longterm retention for the transfer characters. The inferior frontal gyrus seems to be associated with the efficiency of retrieving and manipulating semantic representations because there are learning related decreases for trained characters and this decrease is correlated with greater behavioral improvement from early to late in learning. (c) 2007 Published by Elsevier Ltd.