Association between a cannabinoid receptor gene (CNR1) polymorphism and cannabinoid-induced alterations of the auditory event-related P300 potential

► The CNR1 gene seems to be involved in the regulation of the P300 potential. ► (AAT)n may alter the sensitivity to the acute effects of cannabinoids on P300. ► The number of AAT repeats correlates with P300 variables under acute THC.