Single subject data (sentence condition).

ERP effects (frontal negativity and parietal positivity) of single subjects observed during processing of false and true negated sentences. Columns show amplitude values (in µV) averaged for the frontal or parietal electrode clusters. The + indicates subjects showing larger effects for false compared to true negated statements. The – characterizes subjects showing the opposite effects. Last rows: Total number of subjects (%) showing the pattern false>true.