highly significantP < 0.01
A highly significant group interaction was observed between radial diffusivity and alternating-switch cost (whole brain corrected at P < 0.01).
A highly significant group interaction was observed between radial diffusivity and alternating-switch cost (whole brain corrected at P < 0.01).
Using the stringent permutation test we employed, this relationship was of borderline significance, when corrected for multiple comparisons across the whole brain ( P < 0.06 in the right fornix, peak voxel: x = 7, y = −5, z = 9 and P < 0.07 in the left fornix, peak voxel: x = −2, y = −16, z = 17).