Methods A study of randomized double-blind contrast test was performed with piracetam as contrast medicine.

方法 采用随机双盲对照试验，对照药物为吡拉西坦。

Objective: To investigate the changes of glutamate (Glu) and gamma-amino butyric acid (GABA) contents in rat brain induced by chronic ethanol treatment and study the protective effects of piracetam.

采用化学检测法分别测定大鼠小脑、大脑皮层、海马和丘脑中的谷氨酸及γ-氨基丁酸含量。