[at_a_remove]

I cannot see how one might perform an experiment to determine which concept is correct. As with most things which are unfalsifiable, the idea can be amusing for a bit but is ultimately not useful to the extent that you can do anything about it. You cannot serve tea from Russell's Teapot.

[cognaitiv]

If the brain is a receiver, information transfer could happen non-locally and the tea might be telepathy, precognition, or remote viewing. In the split brain example, demonstrating an ability to coordinate between hemispheres in ways not predicted by neural separation might challenge the physical origin of consciousness as with the chicken and shovel anecdote.

Experiments demonstrating an external source of consciousness would be very interesting.

Not a teapot in this case!

[at_a_remove]

Ah, no.

Suppose you do all kinds of studies and not show any telepathy, precog, or remote viewing. You could still say that the brain was only a receiver. None of that would disprove the "brain-as-consciousness-receiver" concept, you would just say that, I guess it is one way, no telepathy.

It's not disprovable. And so, kind of boring.

[cognaitiv]

Or communicate telepathically with dogs.