Modern non-invasive brain imaging technologies, such as diffusion weighted magnetic resonance imaging (DWI), enable the mapping of neural fiber tracts in the white matter, providing a basis to reconstruct a detailed map of brain structural connectivity networks. Brain connectivity networks differ from random networks in their topology, which can be measured using small worldness, modularity, and high-degree nodes (hubs). Still, little is known about how individual differences in structural brain ...
Localizing brain structures and pathways associated with intellectual performance and cognition may clarify the networks involved, their development, and their dysfunction in disease. Here we introduce a measure of fiber crossing computed from high angular resolution diffusion images (HARDI), with the goal of better characterizing complex white matter microstructure. We aimed to detect white matter features associated with intellectual performance, previously missed due to limitations of the single tensor diffusion ...
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