Blue area shows region of dorsal IFG, with a focus in pars opercularis, showing greater activation in deaf compared with dyslexic participants. Yellow area shows region of IFG, with a focus in pars triangularis, showing greater activation in dyslexic compared with deaf participants (voxelwise P < 0.05; clusterwise P < 0.01). A mask from the one-way ANOVA contrasting the three groups was used to constrain this analysis. Activated voxels up to 20 mm beneath the cortical surface are displayed.