The analysis for factor 442 at the midline site POz revealed a significant task × group interaction, resulting from greater P3 sources in controls than patients for faces (1.00 ± 1.23 vs. 0.60 ± 0.94) but not words (0.74 ± 1.13 vs. 0.76 ± 1.08). There was also a task × condition interaction, stemming from greater old/new effects for words (0.93 ± 1.15 vs. 0.58 ± 1.02) than faces (0.85 ± 1.10 vs. 0.70 ± 1.08), but there were again no interactions involving group and condition. Thus, at anterior and parietal midline sites, patients showed the same early old/new effects as controls (cf. Figure 6CE, columns 3 and 4).
