Table 1.

The reaction time and latency to first step-down in pups at the age of 8 weeks in each treatment group

Treatment dose (mg/kg/day)	Reaction time Latency to first step-down
	(second)	(second)
Control	27.1±3.8	39.1±3.5
NP (50)	26.4±3.9	40.2±3.9
NP (100)	28.0±5.2	39.8±5.3
NP (200)	37.5±6.3*	25.5±3.8*

ANOVA: vs control.

^*P<0.05