Figure 1.

Spatial smoothing makes short and strong links stronger. (A) Regions of Interest (ROIs) that are close to each other have, on average, higher correlations, as seen from the dependence of link weights on the distance of the centroids of the ROIs. Smoothing increases the majority of the correlations. ROI–ROI correlations are averages over 13 subjects. Lines are bin averages and crosses mark correlations between the same areas in the different hemispheres. Colors and line types indicate smoothing kernel size (see panel B for legend). (B) Link weights at each smoothing level are compared to weights obtained from non‐smoothed data as a function of distance. Intuitively, the weight of short links increases more than the weight of long‐distance links. For calculating the differences in link weight, Fisher's Z‐transform has been used (see Methods section for details). (C) Distributions of link lengths in network thresholded at 10%. [Colour figure can be viewed at wileyonlinelibrary.com].