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Advances in Psychological Science    2012, Vol. 20 Issue (9) : 1393-1400     DOI: 10.3724/SP.J.1042.2012.01393
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Neural Mechanism of Apraxia Agraphia
RAN Guang-Ming;CHEN Xu;MA Jian-Ling;PAN Yan-Gu;HU Tian-Qiang
Faculty of Psychology, Southwest University; Research Center of Mental Health Education, Southwest University, Chongqing 400715, China
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Abstract  Apraxic agraphia refers to the phenomenon that people can’t write or can’t write correctly though they know how to write. The neural network involving in apraxic agraphia includes the cortico-cortical connection and cortico-subcortical junction. Three subtypes involved in the cortico-cortical connection include the frontal-parietal junction, the parieto-occipital connection and the network which is associated with the frontal lobe, parietal lobe, occipital lobe and temporal lobe. These subtypes are in charge of the spatial manipulations of represented images, recalling and retrievaling the forms of characters. The other neural network is the cortico-subcortical junction, which consisted of the cerebellar-cortical connection, thalamo-cortical junction, and the network including the corpus striatum, internal capsule and cerebral cortex. They are related to the graphic output programming, the formation of grapheme, and the praxis command. Future researches need focus on psychological and mental mechanism of apraxic agraphia and rehabilitation work of it.
Keywords apraxia agraphia      neuroimaging technologies      neural network      neural mechanism     
Corresponding Authors: CHEN Xu   
Issue Date: 15 September 2012
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RAN Guang-Ming
CHEN Xu
MA Jian-Ling
PAN Yan-Gu
HU Tian-Qiang
Cite this article:   
RAN Guang-Ming,CHEN Xu,MA Jian-Ling, et al. Neural Mechanism of Apraxia Agraphia[J]. Advances in Psychological Science, 2012, 20(9): 1393-1400.
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http://journal.psych.ac.cn/xlkxjz/EN/10.3724/SP.J.1042.2012.01393     OR     http://journal.psych.ac.cn/xlkxjz/EN/Y2012/V20/I9/1393
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