One Answer

  1. I think it depends on which parts are fused together and how hard. A good living example to answer your question is conjoined twins´┐ŻKrista and Tatiana Hogan.

    They are fused together by the thalamus, a part of the brain responsible for redistributing information from the senses. They have two different personalities, but the sensory information seems to be combined in some way. If one of the girls closes her eyes, she can describe what the other sees.

    I think that such conjoined twins, fused by the brain, can give science very important answers about the structure of consciousness and its connection with the brain. But such cases are very rare in themselves, and they are even rarer due to the frequent non-viability of such twins.

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