Table 1. Decreased effects of DCA on the sleep onset of mice treated by sub-hypnotic dose of pentobarbital (28 mg/kg, i.p.).

After administration of muscimol and decursinol angelate (DCA), pentobarbital (28 mg/kg) was given i.p. to mouse. Each value represents the mean S.E.M of 11~12 observations. ^*p<0.05, ^**p<0.01, ^***p<0.005, compared with that of the control (Chi-square test and ANOVA followed by Holm-sidak test).