拓扑随机性和边数预测功能脑网络的模块结构
Topological Randomness and Number of Edges Predict Modular Structure in Functional Brain Networks
摘要:
在最近的一篇论文中,Bassett等人(2011)分析了人类大脑功能网络的静态和动态组织。我们在这里集中在本文中提出的第一个要求,它指出,这种网络的静态模块结构是嵌套的时间。Bassett等人(2011年)认为,这种分级结构强调了“多尺度模块化结构”。然而,在这封信中,我们表明,这样的关系基本上是由在不同的时间尺度上计算的相关系数的随机变化的增加介导的。
英文摘要:
In a recent paper, Bassett et al. (2011) have analyzed the static and dynamic organization of functional brain networks in humans. We here focus on the first claim made in this paper, which states that the static modular structure of such networks is nested with respect to time. Bassett et al. (2011) argue that this graded structure underlines a "multiscale modular structure". In this letter, however, we show that such a relationship is substantially mediated by an increase in the random variation of the correlation coefficients computed at different time scales.
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