Separate MANOVAs were carried out for each of the ERP amplitude measures (N100, P200, N200, P3b and N300), EROEVK power measures (δ1, δ2, θ1, θ2 and α) and EROTOT power measures (δ1, δ2, θ1, θ2 and α). For each MANOVA, the particular measure (for example the P3b amplitude measures or the α EROEVK power measures) at each of the MESOIs were taken as the multiple dependent variables, with group (NAC vs. LTAA) as the between-subjects independent variable. A further MANOVA and a multivariate analysis of covariance (MANCOVA) were performed on a subset of the ERO power measures at selected MESOIs. The measures selected were the ones found to be the best7 discriminators of the groups. The covariate utilized for the MANCOVA was an ERP amplitude measure at a selected MESOI found to best8 discriminate the groups.
