Ethanol facilitation of short-term memory in adult rats with a disturbed circadian cycle

The aim of this study was to evaluate the effect of 3-month ethanol treatme nt on olfactory social memory test performance using two inter-exposure int ervals [30 min: short-term recognition (STR) or 120 min: long-term recognit ion (LTR)] in adult rats with a disturbed circadian cycle (DCC). Ethanol tr eatment both in ethanol-preferring and -non-preferring groups improved the STR task compared to control rats. However, LTR procedure triggered the opp osite tendency. Moreover. no differences between control rats with DCC and those with normal diurnal rhythm in STR and LTR paradigms were observed. Ou r results suggest that, under some conditions, alcohol facilitates short-te rm memory in adult rats.