The situation when the right hand does not know what the left is creating, quite ordinary. Perhaps even familiar. Neurophysiologists will explain her spore: a person de has two hemispheres, one is left, the other is right; The left is responsible for the right hand, the right - for the left, they can coordinate their actions, but if you conduct a commissus, in other words, the splitting of the brain, both hemispheres will act in isolation.