Neural mechanisms underlying word processing have been extensively studied. It has been revealed that when individuals are engaged in active word processing, a complex network of cortical regions is activated. However, it is entirely unknown whether the word-processing regions are intrinsically organized without any explicit processing tasks during the resting state. The present study investigated the intrinsic functional connectivity between word-processing regions during the resting state with the use of fMRI methodology. The low-frequency fluctuations were observed between the left middle fusiform gyrus and a number of cortical regions. They included the left angular gyrus, left supramarginal gyrus, bilateral pars opercularis, and left pars triangularis of the inferior frontal gyrus, which have been implicated in phonological and semantic processing. Additionally, the activations were also observed in the bilateral superior parietal lobule and dorsal lateral prefrontal cortex, which have been suggested to provide top-down monitoring on the visual-spatial processing of words. The findings of our study indicate an intrinsically organized network during the resting state that likely prepares the visual system to anticipate the highly probable word input for ready and effective processing. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
基金:
Chinese Academy of SciencesChinese Academy of Sciences [KGCX2-YW-129]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [60910006, 30970771, 31028010, 81000640, 30970769, 30770617]; National Basic Research Program of China (973)National Basic Research Program of China [2006CB705700]; NIHUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USA [R01HD046526, R01HD060595]
第一作者机构:[2]Xidian Univ, Life Sci Res Ctr, Sch Life Sci & Technol, Xian 710071, Peoples R China;
通讯作者:
通讯机构:[1]Capital Med Univ, Dept Radiol, Beijing Tiantan Hosp, Beijing Neurosurg Inst, Beijing 100050, Peoples R China;
推荐引用方式(GB/T 7714):
Zhao Jizheng,Liu Jiangang,Li Jun,et al.Intrinsically organized network for word processing during the resting state[J].NEUROSCIENCE LETTERS.2011,487(1):27-31.doi:10.1016/j.neulet.2010.09.067.
APA:
Zhao, Jizheng,Liu, Jiangang,Li, Jun,Liang, Jimin,Feng, Lu...&Tian, Jie.(2011).Intrinsically organized network for word processing during the resting state.NEUROSCIENCE LETTERS,487,(1)
MLA:
Zhao, Jizheng,et al."Intrinsically organized network for word processing during the resting state".NEUROSCIENCE LETTERS 487..1(2011):27-31