synchronization in the theta (4–8 Hz) and gamma (30–45 Hz) bands as indexed by significant synchronization likelihood comparisons across groups. Both bands have been associated with memory formation as subserved by hippocampo-neocortical connections [33], and the synchronization of the heavy drinkers in these bands could reflect changes in the hippocampus, cortex, and/or hippocampo-neocortical connections as observed for alcoholics [34,35]. Thus, several lines of evidence converge on the possibility that “normal” alcohol consumption can alter EEG signals.
