et al., 1997b, Klimesch et al., 1998, Klimesch et al., 1996b), and fast alpha activity (10-12 Hz) has been shown to mediate semantic memory processes as well as stimulus-related aspects (Klimesch, 1996, Klimesch, Doppelmayr, 1997a, Klimesch, Doppelmayr, 1997b, Klimesch, Schimke, 1994). Therefore, based on findings in the literature that are related to action/conflict monitoring and response inhibition, assessed by the Go/NoGo task and the functional significance of various frequency bands as mentioned above, analyses in the present study was restricted to frequency bands below 12.5 Hz. Changes in the N1, N2, and P3 ERP components, which probably reflect modulations in low-frequency oscillations (e.g., in the delta-alpha range), have been observed with respect to the Go/NoGo task.
