ACHE and amnesia: While scopolamine applied for 28 days to induce amnesia caused a significant increase in AChE activity in the hippocampal and cortical regions (p < .001 and p < .01, respectively) of the SC group compared to the untreated control group (PS), galantamine and RDEO treatments applied to the amnesia group significantly decreased the activity of this enzyme (p < .001 and p < .01 in the hippocampus, respectively; p < .05 and p < .01 in the cortex, respectively) (Figure 4a,b).