Figure 3.

Effect of single doses of ZnSO₄ and/or carmustine (BCNU) on learning and short-term memory (STM) in rats. Raw data are presented as mean values (n = 15). ZnSO₄ was injected as a single dose (0.1 µmol/10 µl saline, i.c.v). BCNU was injected in a single dose (20 mg/kg i.v). Learning and short-term memory (STM) were assessd by using radial arm water maze where the number of errors for each group was calculated in 12 trials to indicate learning behaviour. After 30 min from leaning phase STM for each group was assessed by measuring the number of errors.