Memes

both in the psyche and in the body? When I am tried I can’t think well, when I am depressed it’s harder to perform a bench press than when I am not depressed.

Note however that those are both examples related to brain chemistry. OP's meme seems to be pointing more toward the fact that it's easy to see why people who lose a finger or who can't move their bodies at all are still people, whereas that claim is more difficult to lay on bodies of people with no brain activity. Of course brain and body are linked but I'd argue that the "brain pilot model" is more accurate than "body and brain are inseparable in any practical sense" because you can lose pieces of the body while still retaining core elements of self, but that doesn't work so well when losing parts of the brain.