There were no significant group or condition effects for the auditory late occipital negativity (LN sink; cf. factor 205 in Figure 8C; Table 4A). However, the corresponding centrotemporal source was greater for old than new stimuli (M ± SD, old = 0.90 ± 1.04, new = 0.59 ± 0.89). In contrast, the visual LN sink (cf. factor 175 in Figure 8D; Table 4B) was reduced in patients compared with controls, and so was the corresponding centrotemporal source. Despite these reductions, inverted old/new effects at mid-centroparietal sites (Figure 9D) were more robust in patients, F(1, 38) = 51.9, p < .0001, than in controls, F(1, 38) = 5.70, p = .02, resulting in a significant group × condition interaction (cf. factor 175 in Table 4B). Thus, although their response-locked visual LN sink was markedly reduced, patients showed, unlike controls, a prominent old/new effect in this component.
