are literally all in my head. that's where the damage exists. the brain can be pretty dumb at times and easy to trick. that's how the mirror box works.
i put my left hand in the box behind the mirror and put my right hand in front of the mirror. then i look at the mirror and my brain thinks the reflection of my right arm is actually my left. when i move my fingers or wrist on the right, while i try to move them on the left, the brain thinks i'm actually moving them on the left. and then i get some actual, new movement.
the brain learns to move 