Table 2

Fractional anisotropy differences between unaffected relatives of patients with major depressive disorder and controls*

MNI coordinates
RegionVoxelsp valuexyz
Body–splenium of corpus callosum2610.0399−3024
Body of corpus callosum620.046−11−2826
Body of corpus callosum (left IFO, anterior thalamic radiation)1580.041−27−4521
Left posterior corona radiate (left corticospinal tract)950.045−26−2425
Left post- and precentral gyrus (left SLF)710.045−48−621
Left external capsule (left IFO)200.049−33−106
  • IFO = inferior fronto-occipital fasciculus; MNI = Montreal Neurological Institute; SLF = superior longitudinal fasciculus; UHR = unaffected relatives of patients with major depressive disorder.

  • * The table shows regions with increased fractional anisotropy values for the UHR compared with the control group.

  • The Harvard-Oxford Structural Atlas and ICBM-DTI-81 white-matter labels atlas were used for region identification.39

  • The p values, family-wise error–corrected for multiple testing across the whole brain fibre tracts, are < 0.05 in all participants.