Differences in hemispherical thalamo-cortical causality analysis during resting-state fMRI

被引：0
|
作者：
Anwar, Abdul Rauf [1 ]
Muthalib, Makii [2 ,3 ]
Perrey, Stephane [2 ]
Wolff, Stephan [4 ]
Deuschl, Guenther [5 ]
Heute, Ulrich [1 ]
Muthuraman, Muthuraman [5 ]
机构：
[1] Univ Kiel, Fac Elect Engn Digital Signal Proc & Syst Theory, D-24143 Kiel, Germany
[2] Univ Montpellier I, Movement Hlth M2H, Euromov, F-34090 Montpellier, France
[3] Queensland Univ Technol, Fac Hlth, Brisbane, Qld 4059, Australia
[4] Univ Kiel, Dept Neuroradiol, D-24105 Kiel, Germany
[5] Univ Klinikum Schleswig Holstein, Dept Neurol, D-24105 Kiel, Germany
来源：
2014 36TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) | 2014年
关键词：
MATLAB TOOLBOX; DEFAULT MODE; CONNECTIVITY; THALAMUS;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Thalamus is a very important part of the human brain. It has been reported to act as a relay for the messaging taking place between the cortical and sub-cortical regions of the brain. In the present study, we analyze the functional network between both hemispheres of the brain with the focus on thalamus. We used conditional Granger causality (CGC) and time-resolved partial directed coherence (tPDC) to investigate the functional connectivity. Results of CGC analysis revealed the asymmetry between connection strengths of the bilateral thalamus. Upon testing the functional connectivity of the default-mode network (DMN) at low-frequency fluctuations (LFF) and comparing coherence vectors using Spearman's rank correlation, we found that thalamus is a better source for the signals directed towards the contralateral regions
引用
收藏
页码：990 / 993
页数：4
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