Similarly, based on the observed region-specific condition differences in all frequency bands, it may also be concluded that higher evoked delta power, especially in posteriotemporal regions, appears to contribute to the execution (Go) of a motor response (activation) while evoked slow alpha power at frontocentral regions and evoked fast alpha power at posteriotemporal regions appear to contribute to the suppression (NoGo) of a motor response (inhibition). Further, only evoked fast alpha power can reliably be interpreted as differentially reflecting suppression (NoGo) of a motor response based on the specificity of group and condition differences that are specific to the NoGo condition. Therefore, based on regions of significant group (posteriotemporal regions) and condition (posteriotemporal regions) discriminability of evoked fast alpha power within the 100-200 ms time duration, as well as previous studies indicating its functional significance (e.g., Klimesch, 1996, Klimesch, Doppelmayr, 1997a, Klimesch, Doppelmayr, 1997b, Klimesch, Schimke, 1994), it is plausible to conclude that NoGo evoked fast alpha activity may reflect the semantic memory processes and/or stimulus related aspects of cognitive inhibitory processing during the suppression of a motor response and
