Figure 1.

Global brain functional networks. (A) All 215 functional networks in the entire brain derived from a 10 min fMRI scan during the performance of WCS task in a representative control subject are depicted as a color-coded image. The color coding simply demarcates the distinctions between networks; i.e., each color represents one type of network. (B) The same data as above, except the color coding and color scale represents the strength of the functional connectivity (correlation coefficient) between pairs of voxels. (C) The largest 10 networks are depicted. Color coding is the same as in (A). (D) Histogram showing the distribution of connection strengths (correlation coefficients) between pairs of voxels within each network. (E) Distribution of connection strengths (correlation coefficients) between pairs of voxels across pairs of networks. (F) Spatial extents and sizes (number of voxels per network) of networks are plotted as frequency histograms. Spatial extent of each network is defined as the mean Euclidean distance between locations of pairs of voxels within the network. The values of centroids for the bins in the histograms are given the text, and in the Figure 2 legend.