Table 1.

Experimental design

Group	Treatment	Dose (mg/kg)
I	Normal control treated with saline solution	-
II	Negative control group treated with scopolamine	1.5 mg/kg, i.p
III	Piracetam + Scopolamine	150 mg/kg + 1.5 mg/kg, i.p
IV	Extract low dose + Scopolamine	200 mg/kg, p.o. + 1.5 mg/kg, i.p
V	Extract high dose + Scopolamine	400 mg/kg, p.o. + 1.5 mg/kg, i.p