Single subject data (prime-target condition).

ERP effects (frontal negativity and parietal positivity) of single subjects observed during processing of target words preceded by true or false negated prime words. 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.