SB242084 (Sigma-Aldrich, Atlanta, GA), a 5-HT2C antagonist, was suspended in a vehicle of 0.5% DMSO in saline in the doses of 0.3, 1, and 3 mg/kg (Yoshimoto et al., 2012 (link)). Buspirone (Sigma-Aldrich), a 5-HT1A partial agonist and dopamine D2, D3, D4 antagonist, was dissolved in saline in the doses of 1, 3, and 10 mg/kg (Martin et al., 1992 (link); Rodgers et al., 1997 (link)). Drugs were administered intraperitoneally in a volume of 10 ml/kg 20 min before either testing for two-bottle choice consumption or locomotor activity in the open field.