correct trials were included in the averaged waveforms. Task difficulty can also be ruled out, as they were not observed in a more difficult dichotic oddball task (Tenke et al., 2008). Although the novelty oddball task differed in stimulus timing (1-s SOA as compared to 2 s for the previous two-stimulus oddball tasks), the topography of the later response-related factor (F − CP+) was preserved for both groups, indicating that any variations in component structure that were related to the abbreviated response period were resolved by the end of the epoch.
