Which body eventually you belong if half of brain is exchanged with others?

Question

I has been carrying this question for 15 years.

Let's define there is 2 person, named X & Y. If we exchange X & Y's brain (put X's brain into Y body, and put Y's brain into X body), X may then 'controls' Y body as his, as well as Y do the same. It means, these 2 person are 'exchanged'.

But what happen if we put half of X's brain into Y's body? Now Body Y has the mixed brain from X and Y, so who will finally controlling body Y? While brain X is existed in body X and Y at the same time, which body is controlled by brain X? I don't think we could controlling 2 bodies at the same time.

I always assume that, there is a crucial point in the brain to define the controllership, which is the 'real me'. if we could find out the crucial point of us, we can simply move the point into everybody's brain and then we could be them.

Does this such of point exist?

Answer 1

You belong to the original body. Like a daughter to her father. On another aspect; Research hasn't been able to quantify self. So, until they do there is no locus of being. Without knowing what part of the brain is the self with the current knowledge we have the answer is only theoretical.

Answer 2

This is a similar quandry to the teleporting one, where the process leaves two of you, who is you?

I think that the question lies in which half of your brian is dominant? Personally I think that the left side would be dominant based on the fact that the left side is credited with the more practicable thinking processes. But, then again, I'm not a brain expert.

Perhaps neither X nor Y exist anymore, and their hybrids are twins? The my question would be which one is evil?