采用穿梭箱、跳台法、避暗法和水迷路四种条件反射方法,研究标准的人参提取物(G115),银杏提取物(GK501)及两者的混合物Gincosan对幼年大鼠(3月龄)和老年大鼠(26月龄)记忆力的作用。提取物以3种剂量给药即G115 17.50和150mg/kg,GK501为10,30和90mg/kg,Gincosan为27,80和240mg/kg.研究表明,这两种提取物及其混合物可改善学习行为的停滞, Using the shuttle box, step-down method, avoidance method and water labyrinth, four kinds of conditional reflex methods were used to study the standard ginseng extract (G115), Ginkgo biloba extract (GK501) and a mixture of both Gincosan and juvenile rats (3 months old). The effect of memory on aged rats (26 months old). The extracts were administered at 3 doses, G115 17.50 and 150 mg/kg, GK501 at 10, 30, and 90 mg/kg, and Gincosan at 27, 80, and 240 mg/kg. Studies have shown that these two extracts and their mixtures improve learning. Stagnation of behavior,