If I recall correctly, the brain extends it’s concept of self to encompass the whole car while you’re driving, and to encompass a tool when you’re using one (must be why we freak out when our computers don’t work right…). If this is true, then the brain should have no problem learning to control an ABB with nerve signals, when provided the proper feedback (i.e. we don’t necessarily need to learn the brain signals for up/down/left/right, just provide feedback to the brain of movement in the respective direction, and the brain should be able to learn the output sequences based on that.)