It's currently understood that it's the presence of the electrode that causes buildup of glial tissue, not the stimulation current, so this approach wouldn't re

It's currently understood that it's the presence of the electrode that causes buildup of glial tissue, not the stimulation current, so this approach wouldn't really work. It isn't really necessary though, since you can turn up the current slightly to compensate for the buildup around the electrode. It's a relatively coarse manipulation, but we'll be increasingly using optogenetics as a replacement.