Guess that explains how many people manage to talk out of their asses. Sorry, Mr. AC, but brain activity is entirely restricted to that thing in your head. I BELIEVE you were trying to say that your brain does not work in isolation from the rest of the body, which is true. Our brains work on the input from the rest of the body. Change the body, and the chemical messages to the brain will be different.
as for taking on the personality of transplant donors? That's nonsense. Personality changes, quite probable. Personality to match the donor, not possible.