Fig. 4

Correlations of cortical thickness and cortical mean diffusivity with VFT and BNT scores. Correlations of cortical thickness (left) and cortical mean diffusivity (right) with VFT and BNT scores in each FTLD subgroup. VFT and BNT values positively correlated with cortical thickness (orange–purple) and negatively correlated with cortical mean diffusivity (yellow–green). Only the clusters that survived familywise error correction P < 0.05 are shown. bvFTD, behavioral variant of frontotemporal dementia; BNT, boston naming test; FTLD, frontotemporal lobar degeneration; nfvPPA, nonfluent variant primary progressive aphasia; svPPA, semantic variant primary progressive aphasia; VFT, verbal fluency test