Supplementary Material

Figure S1. Result of the main effect of irregularity in response to the auditory stimulus (a) and to writing (b) at the whole brain level displayed on glass brain (left panel) one axial slices (right panel. (p<0.05 FWE corrected).

Table S1. List of stimuli for the three condition IRB, IRF and REG.

Table S2. Linguistic characteristics matched across the three conditions. a: Linguistic characteristics for IRB, IRF and REG words (New et al., 2004, 2001), b: pairwise t-test between the three types of word for each linguistic parameter. (1- Number of stroke letter (Spinelli, Kandel, Guerassimovitch, & Ferrand, 2012), 2- Phono-Orthographic Consistency (POC) (Planton et al., 2014)

Table S3. Individuals ROIs. For each region, the MNI coordinates and size (mm3) of the individual ROIs are given. Size values in BOLD indicate FWE p<.05 thresholded ROIs, and asterisks indicate the cases where 6mm radius spheres centered on the center of the search volume was defined as ROI.