Thanks, Mrs, D., I did the search, and was astounded to find the recent thread, long and controversial. I had not imagined that it would have caused this much excitement all over again.

I was startled at their new website's advertising--they are now saying that the machine actually measures signals that the nerves are generating and sends back impulses that are the negative the what is measured. But I know for sure the unit I bought a decade ago didn't measure a thing. It was a pure output unit.

A lot of whoo-ey.