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Research of Hubs Location Method for Weighted Brain Network Based on NoS-FA

机译:基于NOS-FA的加权脑网络集线器定位方法研究

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摘要

As a complex network of many interlinked brain regions, there are some central hub regions which play key roles in the structural human brain network based on T1 and diffusion tensor imaging (DTI) technology. Since most studies about hubs location method in the whole human brain network are mainly concerned with the local properties of each single node but not the global properties of all the directly connected nodes, a novel hubs location method based on global importance contribution evaluation index is proposed in this study. The number of streamlines (NoS) is fused with normalized fractional anisotropy (FA) for more comprehensive brain bioinformation. The brain region importance contribution matrix and information transfer efficiency value are constructed, respectively, and then by combining these two factors together we can calculate the importance value of each node and locate the hubs. Profiting from both local and global features of the nodes and the multi-information fusion of human brain biosignals, the experiment results show that this method can detect the brain hubs more accurately and reasonably compared with other methods. Furthermore, the proposed location method is used in impaired brain hubs connectivity analysis of schizophrenia patients and the results are in agreement with previous studies.
机译:作为许多相互关联的大脑区域的复杂网络,存在一些基于T1和扩散张量成像(DTI)技术的结构人脑网络中的关键作用的中央枢纽区域。由于大多数关于整个人脑网络中的集线器定位方法的研究主要涉及每个单个节点的本地特性,而不是所有直接连接节点的全局特性,提出了一种基于全局重要贡献评估指标的新型集线器定位方法在这个研究中。流动线(NOS)的数量与标准化的分数各向异性(FA)融合,以获得更全面的脑生物信息。脑区域重要贡献矩阵和信息传输效率值分别构建,然后通过将这两个因素组合在一起,我们可以计算每个节点的重要性值并找到集线器。从节点的本地和全球特征和人脑生物中的多信息融合的兴趣,实验结果表明,这种方法可以更准确地与其他方法检测大脑集线器。此外,所提出的定位方法用于精神分裂症患者的脑集线器连接性分析,结果与先前的研究一致。

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