基于静息态fMRI的人脑功能网络的小世界特性  

Small-world properties of human brain functional networks based on resting-state functional MRI

作　　者：黄文涛[1,2] 冯又层[1] 

机构地区：[1]中南民族大学电子信息工程学院,武汉430074 [2]中南民族大学武汉神经科学和神经工程研究所,武汉430074

出　　处：《华中师范大学学报（自然科学版）》2011年第4期565-568,共4页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金项目(11047134);中南民族大学自然科学基金项目(YZZ09004);中南民族大学神经科学和神经工程重点实验室研究基金项目(XJS09001)

摘　　要：从19个健康志愿者静息态的功能磁共振成像中提取了时间序列,计算了90个脑区的功能相关性,设定阈值建立脑功能网络的无向简单图,然后计算了一些网络测度.结果显示人脑功能网络具有小世界特性;性别分层后并没有发现各网络测度在全脑水平有显著性的性别差异.Time series of 90 brain regions were extracted from resting state functional magnetic resonance imagines in 19 healthy volunteers, functional correlations between brain regions were calculated, and the thresholds were set to establish the simple undirected graphs, then some measurements of brain functional networks were computed. The results demonstrated that the human brain functional networks had small world properties and that there were no significant differences between networks measurements in full brain level after gender stratification.

关 键 词：复杂网络 小世界 脑功能连接 静息态 功能磁共振成像 

分 类 号：O414.2[理学—理论物理] R741.04[理学—物理]