and it's the kind of wire that you can put into the brain

这种导线可以置入脑部
and you can measure recordings of what's happening in the brain extracellular space.

然后测定并记录在脑细胞外具体发生了些什么
You can measure action potentials and electrical activity

通过将电极插入脑部后就可以测定
in the brain by putting electrodes in.

脑细胞动作电位和脑电活动
Physicians do this all the time to measure activity

譬如医生们一直在利用这项技术
in the brain in patients that have epilepsy, for example.

监测癫痫病人的脑电活动
One of the problems with these materials is that

这些材料的还存在一些问题
when you put them into the brain they're not completely biocompatible.

这些缺乏良好的生物相容性的材料植入脑部后
The brain does respond to them.

大脑会发生组织反应
It will form a scar around them

在电极的周围形成瘢痕
and eventually the electrode won't work anymore.

最终导致电极停止工作
We coated these electrodes with a polymer that contained drug.

我们将电极表面裹上含有药物的聚合物