[colechristensen]

I was under the impression that your fact of biology was false.

Specifically that the brain-muscle mapping isn't preprogrammed and the brain learns to control what is there.

For example people with fully formed extra digits can just have a fully functional extra finger.

This does get baked in pretty well but the adult brain can re-learn after a catastrophic injury so it's not hard to believe you could figure out how to add virtual appendages or entirely novel "extremities".

[throw20102010]

It's not false. You can't send an action potential down a motor neuron connected to a muscle without a reaction from the muscle. Do not confuse the neurons in your brain (which generate new connections all the time) with motor neurons, which is what the CTRL-labs kit is sensing.

The brain does learn to control what is there, and what is there is attached to your muscles. I'll say it again: the CTRL-labs kit works on electromyography, which only works with muscle activity. You will not magically grow new neurons in your arm that are dedicated sole to the control of a computer.