We can do things to bend the mind to our will, but ultimately we cannot still, or control the brain as an organ. As we take care of our liver by good habits, we ultimately do not control it. Taking the body and mind as separate has been tradition, tho’ evidence exists that they are intrisicaly linked. Just random thoughts, take them or leave them. In answer, our souls never leave, our being will be to AI as same as the next man.