The output electrode was inserted into the rat s ex-paw,and a hole was grinded in the rat s skull,then the rest bones were removed lightly by tweezers that is used in ophthalmology surgical operation.

• 将刺激输出电极插入大鼠前爪腕部,用电钻在颅骨表面磨孔并用眼科镊轻轻剥离余下的骨皮质,完全暴露硬脑膜,放置银球引导电极并观察皮层诱发电位信号。