Indigenous participants LPP ERPs. LPP selected ROIs for face and word stimuli compatible (Blue) vs. incompatible (Red) with prejudice against the indigenous minority. Top: ERPs of Faces. Bottom: ERPs of Words. In agreement with the behavioral results, we found a LPP modulation in the right frontal areas (and a bipolar voltage pattern on left posterior ROI) related to compatible blocks with prejudice to the indigenous only in the Word Condition in Indigenous participants. Abbreviations: LA ROI (Left anterior region of interest); RA ROI (Right anterior region of interest); CZ ROI (Vertex region of interest); LP ROI (Left posterior region of interest); RP ROI (Right posterior region of interest). (* = p < 0.05). (** = p < 0.01).