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Functional network consisting of functionally connected brain voxels, w, x, y, and z. Shading for a given voxel indicates elevated activity. w and z are ascendant to x and y, thus x and y can be thought of as satellite voxels to the central voxels, w and z. A, B, C, and D represent different time points in the voxel time series of w, x, y, and z.
