Experiment with different lengths and configurations of electrodes .

可以做实验使用不同长度的铜线来当电极。

The other challenge is the electrodes .

另外一个问题则是关于电极。

The lithium serves as electrodes , while the nanotube layers are current collectors .

锂作为电极，而碳纳米管层则是电流集合管。

A less invasive approach relies on electrodes on the scalp to pick up brain activity .

另一个不那么深入体内的方法是依靠置于头皮上的电极采集脑部活动。

Most electrodes are designed around the assumption that nerves are round , he says .

大多数的电极是根据神经是圆筒状的假说设计的，他说。