另一种方法称为超级电容，它只使用电极的表面储存电能。

The other way is called a supercapacitor. This stores energy only at the surface of the electrode.

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这种技术被称为脑皮层电图学，简称ECoG。 它主要是通过在大脑皮层上分布电极，来侦测从大脑内部发出的电流信号。

The technology is called electrocorticography, or ECoG, and it uses electrodes placed on the surface of the brain to detect electrical signals coming from the brain itself.

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每一个感光元件都有自己的电极，这些电极与视网膜中的被称为极性细胞的神经细胞联结，这些细胞是眼睛与大脑连接中的第一个传输单元。

Each sensor has its own microelectrode, and these are placed in contact with nerve cells in the retina, called bipolar cells, the first step on the pathway from the eye to the brain.

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