First, I used the search function which did not answer my questions.

I've had an SCI for 29 years at the T4 level. I've recently lost a fair bit of weight. I've still got a bit of "quad belly", which I hide using a Dale ab binder. I was now wondering if I could get my abs toned with an electrical stimulator belt. But...

Do they actually work on someone with no feeling in that area?

If so, are there any stimulator systems that are more effective than others?

Are there any negative side effects to using such stimulators?

I know getting "washboard abs" is probably too much to ask for, but it would be nice if those muscles had some tone to them.