单细胞动作电位的记录需要输入阻抗极高的微电极放大器,市售的价格较贵,且易损坏;如用源跟随器则仍需经过前置放大,而且输入阻抗亦不够高.在学生实验中单细胞动作电位记录常限于示教实验.据此,我们参考国外同类产品,试制了一种简易微电极放大器.该放大器全部由市售进口集成电路组装,具有体积小,操作简便,可靠性好 The recording of single cell action potentials requires input of extremely high-impedance microelectrode amplifiers, which are expensive and easily damaged on the market. If source followers are used, they must be preamplified and the input impedance is not high enough. The single cell action potential recording in the medium is often limited to demonstration experiments. Based on this, we have developed a simple micro-electrode amplifier with reference to similar foreign products. The amplifiers are all assembled from commercially available integrated circuits and have a small size, easy operation, and reliability. it is good