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Cognitive processing in Chinese literate and illiterate subjects: An fMRI study

✍ Scribed by Geng Li; Raymond T.F. Cheung; Jia Hong Gao; Tatia M.C. Lee; Li Hai Tan; Peter T. Fox; Clifford R. Jack Jr.; Edward S. Yang

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
257 KB
Volume
27
Category
Article
ISSN
1065-9471

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✦ Synopsis

Abstract

Functional magnetic resonance imaging (fMRI) and positron emission tomography (PET) were used to map brain activation during language tasks. While previous studies have compared performance between alphabetic literate and illiterate subjects, there have been no such data in Chinese‐speaking individuals. In this study, we used fMRI to examine the effects of education on neural activation associated with silent word recognition and silent picture‐naming tasks in 24 healthy right‐handed Chinese subjects (12 illiterates and 12 literates). There were 30 single Chinese characters in the silent word recognition task and 30 meaningful road‐signs in the silent picture‐naming task. When we compared literate and illiterate subjects, we observed education‐related differences in activation patterns in the left inferior/middle frontal gyrus and both sides of the superior temporal gyrus for the silent word recognition task and in the bilateral inferior/middle frontal gyrus and left limbic cingulated gyrus for the silent picture‐naming task. These results indicate that the patterns of neural activation associated with language tasks are strongly influenced by education. Education appears to have enhanced cognitive processing efficiency in language tasks. Hum Brain Mapp, 2005. © 2005 Wiley‐Liss, Inc.

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