This review has highlighted recent conceptual and methodological progress in the analysis of complex networks. Some of this progress has been truly impressive, significantly influencing all major areas of life, physical and information sciences. Newly developed tools for complex network analysis are now applied to brain networks, at a pace that appears to be steadily accelerating. Still, despite all this progress, an integrated theory of how brain function emerges from brain connectivity has not yet been achieved. Such a theory will have a dramatic impact. The discovery of principles that link structural, functional and effective connectivity to mind and cognition will lead to a new theoretical foundation for future experimental and theoretical approaches in cognitive neuroscience.
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