coherence between frontal and posterior association regions has been shown to increase during the retention period of working memory tasks (Sarnthein et al., 1998). Increasing theta coherence was also found during a mental imagery task (Petsche et al., 1997). These alpha and theta coherence results from the literature suggest that alpha and theta coherence might be a characteristic feature of top-down processing. If so, the observed increase in alpha and theta coherence we observe in LTAA may actively suppress the brain's response to alcohol cues, increasing inhibitory control and emotion regulation, and reducing appetitive drive.
