Apart from these studies on the direct effect of alcohol, there has been an attempt to examine EROs in the groups of social drinkers. For example, De Bruin et al. [167] conducted a task-related EEG study on heavy social drinkers with 24 hours abstinence before the recording session. Functional connectivity was assessed with the SL method. It was found that heavy drinking students had more synchronization in the theta (4-8 Hz) and gamma (30-45 Hz) band than light drinking students during a mental-rehearsal task, which the authors attributed to possible changes in hippocampal-neocortical connectivity.
