Development of transparent electrode with curved surface for simultaneous detection of the electrocorticogram from inside of the optical recording area and/or for giving electro-stimulations to the area

我们研制了一种从光记录区同时检测皮层脑电的透明电极。我们设计了电极基座接触面的形状，使其具有与成年大鼠大脑皮质表面相当的曲率，最后我们使用了玻璃平凹透镜作为电极基座。Ga掺杂的氧化锌薄膜是一种透明导体，在其表面沉积了一层SiO_2薄膜，除了一些小点外，还覆盖了SiO_2薄膜。结果，曲面上的一些大厅仍然是唯一裸露的导体，它们最终充当了独立的电极。利用该电极，我们成功地抑制了光信号中伪迹产生的心跳脉冲。

We have developed a transparent electrode for detecting electrocorticogram simultaneously from optical recording area. We have designed shape of the contact face of the electrode base to a comparable curvature to fit the surface of the adult rat cerebral cortex, and finally we used a glass plano-concave lens for an electrode base. Ga doped ZnO film, a transparent conductor, was deposited on the curved surface and covered with SiO_2 film except some dots. As a result, some halls on the curved surface were remained as the only exposed conductor, and they eventually served as independent electrodes. Using this electrode, we succeeded in decreasing the artifact originated heartbeat pulse on the optical signals.