Hierarchical functional connectivity between the core language system and the working memory system

被引：63

作者：

Makuuchi, Michiru ^{[1
]}

Friederici, Angela D. ^{[1
]}

机构：

[1] Max Planck Inst Human Cognit & Brain Sci, Dept Neuropsychol, D-04103 Leipzig, Germany

来源：

CORTEX | 2013年 / 49卷 / 09期

关键词：

Complex syntax; Working memory; Dynamic causal modeling; Language network; fMRI; SENTENCE COMPREHENSION; NEURAL BASIS; CORTEX; LOCALIZATION; ORGANIZATION; FASCICLE; NETWORKS; PATHWAYS; BEHAVIOR; AREA;

D O I：

10.1016/j.cortex.2013.01.007

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

Language processing inevitably involves working memory (WM) operations, especially for sentences with complex syntactic structures. Evidence has been provided for a neuroanatomical segregation between core syntactic processes and WM, but the dynamic relation between these systems still has to be explored. In the present functional magnetic resonance imaging (fMRI) study, we investigated the network dynamics of regions involved in WM operations which support sentence processing during reading, comparing a set of dynamic causal models (DCM) with different assumptions about the underlying connectional architecture. The DCMs incorporated the core language processing regions (pars opercularis and middle temporal gyrus), WM related regions (inferior frontal sulcus and intraparietal sulcus), and visual word form area (fusiform gyrus). The results indicate a processing hierarchy from the visual to WM to core language systems, and moreover, a clear increase of connectivity between WM regions and language regions as the processing load increases for syntactically complex sentences. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2416 / 2423

页数：8

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