Seed regions of the left FG and right FG; (1) x, y, z coordinates of primary peak locations in the space of MNI of the left FG are −28, −9, −38; t = −2.731; volume: 1836 mm3. (2) x, y, z coordinates of primary peak locations in the space of MNI of the right FG are 32, −10, −38; t = −2.935;volume: 2403 mm3.