Fig. 1: Event-related potentials during (a,b) first word (S1) presentation: (a) GFP and (b) spline maps with upper posterior scalp view of all collapsed tasks. Potentials evoked during (c,d) second stimulus (S2) presentation: (c) GFP and (d) spline maps for each task. Statistical analysis of recognition potential for S1 (e) and S2 (f) stimuli in the schizophrenia (red line) and control (blue line) groups. Lateralization score measured as difference of scalp activity from electrodes of left hemisphere minus activity of right homologues, shown for anterior and posterior quadrants. Negative values indicate greater N150 over left side. GFP = global field power.