No, I'm afraid I don't. First off, what do you mean by "focal electric charges"? Bear in mind that I'm a physicist, and as someone who has had much formal training in electricity I've never even heard this term before, so you're going to have to be more explicit.
And, again, if you're talking about basically zapping someone with enough current to cause their muscles to twitch uncontrollably, that's hardly interesting. Take, for example, the case of my carpet on a dry winter day: walk across it, touch a metal object like a light switch, and zappo - a muscle twitch. That seems to qualify with what you're discussing here.
So, you're still being a bit too vague here. Please tell me, very specifically, what Chang claims to be able to do.