Fig. 2

Effects of the aqueous extract from Markhamia tomentosa stem bark (50 and 200 mg/kg) in the Y-maze on spontaneous alternation  % (a) and on the working memory errors (b) and the reference memory errors (c) during 7 days training in radial arm-maze task in the scopolamine-treated rats. Values are mean ± SEM (n = 5 animals per group). For Tukey’s post hoc analysis—^##Control vs. Sco: p < 0.001, ^#Sco vs. Sco+ME (50 mg/kg): p < 0.01 and ^##Sco vs. Sco+ME (200 mg/kg): p < 0.001 (a), ^##Control vs. Sco: p < 0.0001, ^#Sco vs. Sco+ME (50 mg/kg): p < 0.001 and ^##Sco vs. Sco+ME (200 mg/kg): p < 0.0001 (b) and ^#Control vs. Sco+ME (50 mg/kg): p < 0.001, ^##Control vs. Sco+ME (50 mg/kg): p < 0.001, ^##Sco vs. Sco+ME (50 mg/kg): p < 0.0001 and ^###Sco vs. Sco+ME (200 mg/kg): p < 0.0001 (c)