a. The two white matter tracts of interest shown for a single individual. b. The three language regions of interest selected for the functional and volumetric MRI analyses. The inferior frontal region consists of the opercular, orbital, and triangular part of the inferior frontal gyrus (index 12, 13, and 14) and the inferior frontal sulcus (index 52) in the Destrieux altas. The temporo-parietal region consists of the angular gyrus (index 25), supramarginal gyrus (index 26), and superior temporal sulcus (index 73). The temporo-occipital region consists of the inferior occipital gyrus and sulcus (index 2), lateral occipito-temporal gyrus (index 21), occipital pole (index 42), anterior and posterior transverse collateral sulcus (index 50 and 51), and lateral occipito-temporal sulcus (index 60).