Neurofeedback cannot be permanent, by the very nature of the brain itself. However, as far as I understand it, the theory is this: once the brain learns how to do something right, i.e. helpful to itself, it wants to keep doing things that way. When you're riding a bike, you learn how to stay balanced through a variety of mostly unconscious neuromuscular interactions. When you're being treated for neurological unpleasantries, your brain learns ways to process information more efficiently.
sartresue: I don't think it is being used as a cure for autism, more like a treatment for the unpleasant biomedical symptoms. At least, that is what my doctor is using it for. Hopefully nobody blows it out of proportion.
But you know, if there is a stupid way to do something, that’s how it will be done.