Table 4 shows the correlations of the regional mean source amplitudes with age and task performance. Age was most strongly correlated with the factor score amplitudes for the target P3 source (343) and the novelty vertex source (241), with larger sources in younger subjects. This observation confirms the importance of age as a covariate in the reported analyses. Performance measures were significantly correlated with target-related parietal P3 (343: RTand hit rate) and the response-related centroparietal source (542: RTonly), as well as the novelty vertex source (241: hit rate only).
