“…The effects of alcohol on the central nervous system in AAI have been investigated from several approaches, including its influence on the cell membrane (12,33,44), and more specifically, its effect on three types of neurotransmitter: opioid peptides (7,8,21,23,47), GABA (29,31), and catecholamines (11,32). Although the effects of alcohol on the cell membrane are well known, its effect on specific neurotransmitters is controversial, particularly in the case of endogenous opioids (19).…”