Methods The aqueous extract of all grass of Patrina villosa Juss was injected peritoneally to mice or that accompanied with suprathreshold or subthreshold dose of pentobarbital solution.

方法取白草水提取液分别单独、配伍使用阈上或阈下剂量的戊巴妥钠注入小鼠体内,观察小鼠的自发活动和睡眠时间,并与对照组进行较、分析。