FIG. 6.

Localization of negative CNs: Figure (a) shows relationships between the distances between brain regions in the left and right hemispheres (the lengths of tracts as shown in figure 2 and the correlation between FA values in the tracts and their alternation speeds of perceptual switching. Green triangles show results of all cortical and subcortical regions. Blue triangles, which are results only among cortical regions, are overlaid on top of the green triangles. The red line is the fitted line for whole brain data. Figure (b) shows p-values of t-tests about the differences of Euclidian distances between each pair of connected edges depending on the correlations for results shown in the figure (a). Here, the grid size of correlation strength is 0.2. Within figure (b), the left figure is a result of data samples only of cortical regions, and the right figure is a result of data samples of both of cortical and subcortical regions. We could observe significant increases of distances between brain regions depending on the increases of the correlation.