Ok, I've actually read into the 3 articles you've suggested and none of them are making the argument you are making. I think you just title mined.

Article 1. is about how the brain interprets incoming signals from the body

Article 2. is about dealing with psychiatric needs, such as medication compliance and stress, which result from organ transplants.

And, as I addressed in another comment, Article 3. is a discussion about the impacts of gut microbiome on mood. It is not a discussion of "consciousness".