心理学进展

Vol.5 No.3 (March 2015)

静息态下基于格兰杰因果分析的ACT-R网络有效连接变化研究
Change of Effective Connective of the ACT-R Network in the Resting State Based on Granger Causality Analysis

 

作者:

李 川 , 周海燕 , 周 军 , 熊玉琨 , 秦裕林 , 钟 宁 :北京工业大学,国际WIC研究院,北京

 

关键词:

格兰杰因果分析静息态ACT-R脑网络有效连接Granger Causality Analysis Resting States ACT-R Model Network Effective Connectivity

 

摘要:

近年来,脑功能网络的组织促进了人类大脑的理解。为进一步探究人类大脑功能网络的变化,本研究主要使用有效连接方法对比任务前、后静息态fMRI数据变化。区别于以往大脑整体网络的改变,研究使用基于格兰杰因果分析(GCA)的有效连接方法针对ACT-R脑网络内部开展。结果表明:短暂认知任务前后,ACT-R网络模型内部有效连接发生较大改变;在后静息态,程序性模块(Cad)作为一个主要信息接收点接收来自其他模块的因果影响。

Recently, the organization of functional network promotes the understanding of the human brain. To further explore the functional reorganization affected by a short-time cognitive performance in human brain, we used the method of Granger causality analysis (GCA) to compare two resting fMRI data before and after a problem solving task. Distinguished from the view of the brain network as a whole in previous studies, GCA focused on the internal organization within a brain network. The re-sults showed that taking the ACT-R network as an example, the effective connectivity within the ACT-R network significantly changed after the brief cognitive task. In the post-resting state, proce-dural module (Cad) acted as a main information receiver received influence from other modules.

文章引用:

李 川 , 周海燕 , 周 军 , 熊玉琨 , 秦裕林 , 钟 宁 (2015) 静息态下基于格兰杰因果分析的ACT-R网络有效连接变化研究。 心理学进展, 5, 173-179. doi: 10.12677/AP.2015.53024

 

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