圆窗电极一般采用银丝电极,但由于容易断裂,难以长期固定,所以目前多用于听觉急性实验。国外有采用螺丝钉等将电极做长时间固定的方法,但我们试用于听觉慢性实验中仍感到不理想。最近,我们研究出一种长期安装固定电极的新方法,即在豚鼠头部固定一永久性头托,将电极固定在头托上,有效地避免在听觉慢性实验中由于豚鼠搔抓而导致电极折断。该法具体操作如下: Round window electrode generally silver wire electrode, but because of easy to break, it is difficult to long-term fixed, so currently used for acute hearing tests. Foreign countries have used screws and other electrodes for a long time fixed method, but we try for auditory chronic experiments are still not ideal. Recently, we have developed a long-term method of mounting a fixed electrode, that is, fixing a permanent headrest to the head of a guinea pig and fixing the electrode to the headrest, which effectively avoids electrode scratching caused by guinea pig scratching in an auditory chronic experiment Break. The specific operation of the law are as follows: