observed to occur throughout the ERP window, and while TF-PC analysis indicated that this delta activity significantly contributed to both the N2 and P3 components, regression models indicated that delta clearly contributes most to P3 amplitude. These different delta-related findings suggest that delta activity is sensitive to differing manipulations across tasks. Thus, while delta may index a relatively singular process within a certain paradigm, the present results suggest that delta most likely does not represent a similar process across tasks as is suggested for theta. From this, there appear to be two separable, but highly overlapping, co-activations operating throughout the N2 and P3 ERP components, both of which are sensitive to, but carry unique variance relating to, demands of response inhibition
