Table 1.

Study design.

No.	Treatment from day 1 to day 7	Treatment on day 7th, 45 min after administration of the last dose
G-I (Normal Control)	Normal saline 10 ml/kg/p.o.	–
G-II (Amnesic Control)	5% CMC 10 ml/kg/p.o.	Scopolamine (10 mg/kg/p.o.)
G-III (Standard Control-A)	Piracetam 200 mg/kg/p.o.	–
G-IV (Standard Control-B)	Piracetam 200 mg/kg/p.o.	Scopolamine (10 mg/kg/p.o.)
G-V (Experimental Control-I)	meL.s 200 mg/kg/p.o.	Scopolamine (10 mg/kg/p.o.)
G-VI (Experimental Control-II)	meL.s 400 mg/kg/p.o.	Scopolamine (10 mg/kg/p.o.)
G-VII (Experimental Control-III)	meL.s 800 mg/kg/p.o.	Scopolamine (10 mg/kg/p.o.)

Scopolamine and piracetam were dissolved in normal saline while L. stoechas was suspended in 5% CMC for dose preparation. Then animals were subjected to elevated plus maze (EPM), light and dark test apparatus and hole board test apparatus for behavioral assessment.