Basically what the article concludes "a neural network of consciousness in which the paraventricular nucleus formally serves as the control nucleus of arousal, which is closely related to the maintenance of consciousness, and the neurons in the posterior cerebral cortex. It is related to the integration of feelings and the generation of consciousness content. Besides, the claustrum also represents the key channel of the consciousness loop and the transmission of control information." — Garrett Travers
OK, so this identifies some relationships between consciousness and some brain activity. The relationships is one of 'maintenance', 'integration', and 'generation', and possibly others. So this is an account of one side of a relationship between two
conceptually distinct things, yes? It may not be that they are distinct in
substance, of course. But to have a relationship there must be two, no?
No, that's not really been established yet. — Garrett Travers
Thank you for your candour. I guess sometimes theory can proceed without identifying what a theory is a theory of. Do you think that is the case with the scientific study of consciousness?
But, fundamnetally, the wakeful attention that characterizes human cognition. — Garrett Travers
OK, thanks. So you are specifying humans. Are we not considering animals with brains here? If not, why not?
Also you are specifying wakeful attention. What about dreams when asleep? Are we conscious then?
And what about when our attention is very diffuse, almost as if we are not attending to anything in particular, and allowing an unanalysed body of stimuli determine our experience? Does that count as consciousness?
Global Workspace Theory, Quantum Theory, Integrated Information Theory — Garrett Travers
These are pretty speculative, no?
The Global Workspace Theory is interesting as I think it captures something of the phenomenal character of experience, namely that it feels container-like. But what is it exactly? I don't know enough about the theory. Is it a field, like the electromagnetic field? Or is it a property of an existing field? If so, how can we limit it to a brain as fields are everywhere? Or is it a kind of mathematical space, like a simulated virtual reality? If so, can't that happen outside a human brain also? IIT is, as you say, a kind of functionalism, as perhaps are the others as well. The IIT's two major proponents, Koch and Tononi have both come out as panpsychists of a kind. They think that inanimate systems are conscious, for example simple molecules, atoms and thermostats.
The trouble with all flavours of functionalism is that they tend to be silent when asked "OK, but why can't all that happen in the dark? What is it about any of that that necessitates phenomenal experience?"
Where do you stand on multiple realisability? That gets you out of the brain doesn't it?
There are several Quantum Consciousness theories I think. Are you thinking of the Penrose one?
These are all very different Garrett. And some don't necessarily involve brains. Are you sure it's all as settled as you think?