2009). In addition, the ACC also showed greater theta power to AN than SW. Greater engagement of the ACC during a semantically more demanding task as compared to the lexical decision was similarly reported by Ruff et al. (2008). Indeed, extensive evidence points to the ACC as a central node in a frontal cortical network subserving controlled processing (Paus, 2001; Ridderinkhof et al., 2004; Botvinick, 2007; Carter and Van Veen, 2007; Posner et al., 2007). Widespread anatomical connections of the ACC with lateral frontal areas, limbic structures, the motor cortex, and other levels of the neuraxis make the ACC suitable for its multifaceted role in monitoring for conflict and regulating actions (Devinsky et al., 1995; Barbas, 2000; Bush et al., 2000). Our previous studies confirm the ACC’s sensitivity to task conflict and difficulty as reflected in event-related theta power (Kovacevic et al., submitted) and confirmed with BOLD–fMRI (Marinkovic et al., 2012). Furthermore, in those studies alcohol intoxication especially attenuated the ACC activity, suggesting that the top-down regulatory functions are most vulnerable to moderate intoxication. In the present study, the effects of alcohol were specific to the event-related theta associated with semantic retrieval and the executive dimension. These two functions appear
