The mind isn’t something that’s maintained solely by the brain. The brain is, course, a necessary condition of having any kind of mind. In order to be conscious – particularly in the rich way we are conscious - and behave in the complex way we do, we of course need to have a brain in some kind of working order. Treating patients who have suffered from brain damage from stroke has underlined again and again over the years how everything – from basic sensation to the most exquisitely constructed sense of self – depends on normal brain function. But, the mistake is to assume that living a normal human life, is being a brain in some kind of working order. It seems to me, the fundamental error is confusing a necessary condition – having a brain that’s working OK – with a sufficient condition; that a brain working OK is actually the whole story of our consciousness, our behaviour and our decisions, and so on. I think separating the necessary from the sufficient conditions is very important indeed.
There are several reasons for defending this separation. First of all, there’s a logical error at the very heart of the mind/brain identity theory. It is the muddle of thinking that, if A is correlated with B, then A is caused by B. So, if my experience of a certain sort correlates in a very rough way with neural activity of a certain sort, then my experience is caused by that neural activity; that’s the first mistake. The much more important mistake is to say, not only is it caused by that neural activity, but it is identical with it. So, there’s a conceptual muddle at the heart of the neural theory of consciousness. You might object, well, if consciousness isn’t identical with brain activity, is it just floating in the air? Not at all. Increasingly, I think even mind/brain identity theorists have acknowledged that a brain is actually embedded in, and inseparable from, a body. That body isn’t just a sort of optional extra that it would be if we subscribed to a computational theory in which mind was simply the software of the brain. More than that, that body itself is inseparable from an environment. This is where we go back to the very nature of consciousness; consciousness is profoundly relational. Consciousness, in the philosophical jargon, has about-ness; it has intentionality. So, if I look at something, the thing which I look at, or my experience of looking, is an experience that is about something; it is about an object that is quite separate from the act of looking. I think it is very important to appreciate that, that there are at least two players in every conscious experience. Only one of the players can be plausibly located in the brain and even that is problematical.
...If my seeing an object were simply identical with neural activity in my occipital cortex, then it would be very difficult to see how my experience of the object could be about the object itself. When I look at say, a glass over there, I see something that is other than my seeing, that is other than my experience of it. I ascribe to it a reality that goes beyond what I’m currently experiencing. That is absolutely central to consciousness, whether it is consciousness of objects, on a very basic level, or indeed, at more complex levels, consciousness of other people, or indeed, consciousness of the society in which we live. So, consciousness is profoundly and irreducibly relational. The neural theory of consciousness tends to see only one of the relata – neural events. What is missing is an explanation of how it is that my conscious experiences are always, and often explicitly, about something other than themselves. — Raymond Tallis
And also 'neuromania', the belief that we are our brains. — Wayfarer
Some agenda behind a position like that... — ZzzoneiroCosm
Which one of these definitions do you think includes imagination? — Garrett Travers
the state or fact of having being — ZzzoneiroCosm
So, before humans existed, force did not equal mass times acceleration? This is something that only exists when it is recognised by humans? — Wayfarer
Objects are only strictly defineable in relation to subjects. What humans consider objects, is conditioned by the kind of creatures that they are. — Wayfarer
Furthermore, science itself depends in rational abstractions, mathematics and also all kinds of hypothetical entities and forces. Do numbers exist? If so, in what sense, and why does mathematics work so brilliantly? — Wayfarer
Furthermore, scientists can't claim to know that the universe is material, as the nature of matter itself is unknown. — Wayfarer
and science relies on rational abstractions and models which are themselves not physical. — Wayfarer
Physics itself has demolished the idea that there is an objective reality, same for all observers. — Wayfarer
Language seems like a harder problem for dualists than physicalists to me, and not really that much harder for a physicalists than an idealist. — Count Timothy von Icarus
the state or fact of having being — ZzzoneiroCosm
I was responding to this. There are "other things to it." A diagram showing a one way arrow from the brain to the heart is not an accurate picture of how the circulatory system works. Note, I did not write "the brain does not control heart rate," I said "plenty of other factors outside the brain," work to control heart rate. — Count Timothy von Icarus
Correct. I didn't write anything to the contrary. It is, however, also true that the brain is an individual part of the body that is regulated by, and dependant on other parts of the body.
So for example, I said the ENS has a great deal of autonomy, not that it is autonomous. You shouldn't write off interest in the ENS as simply a series of wires for commands from the brain. It has helped us find out a lot about how the brain works and is an area neglected by neuroscience until more recently. — Count Timothy von Icarus
Being: existence
Thoughts don't exist, the brain does. — Garrett Travers
There are multiple versions of reductionism.[2] In the context of physicalism, the reductions referred to are of a "linguistic" nature, allowing discussions of, say, mental phenomena to be translated into discussions of physics. In one formulation, every concept is analysed in terms of a physical concept. — ZzzoneiroCosm
It's a desperate, extremist reductionism that assays to eliminate thoughts from its picture of the world. — ZzzoneiroCosm
They do not exist. — Garrett Travers
There's no point in going back and forth. We have a fundamental disagreement, and that's that. — ZzzoneiroCosm
It just seems hard to reconcile the brain's decisive causal priority with common medical problems, like defects in the pancreas resulting in a person behaving like they just slammed most of a fifth of vodka, or the role of the immune system is causing (versions of) schizophrenia. Anaphylaxis certainly seems to flow causally from the immune system, and since it can cause death, would represent about as large of a change in the brain as you can get. — Count Timothy von Icarus
That's right. We have a disagreement. You believe thoughts are real, and I know they are imaginary. In fact, they're the definition of imaginary. Lot's of fun! — Garrett Travers
Your definition of existence excludes thoughts. Mine doesn't. I include thoughts in my definition of existence. Hardly an extreme position. — ZzzoneiroCosm
How is that existing outside of your brain? — Garrett Travers
In other words, this "platonism" of yours cannot be divorced from correspondence to the material world. — Garrett Travers
The correspondence is not with a material world, it is with an immaterial world, notice the correspondence referred to is with "data", not "a material world". The model is made to correspond with the data, hence "platonism". That's why I was insistent on asking you about your assumption of "laws". Laws are immaterial. When reality is reduced to 'that which corresponds with laws and mathematics', there is no longer anything material there, in that assumed reality, only information, data. That's the point Berkeley made, we can describe all of our observations without any need to assume "matter". The world consists of forms, and what we apprehend is information, not matter.
The fact which you don't seem to be grasping is, that "matter" was assumed to account for the aspect of reality which we cannot understand, i.e. potential. That's why it's a principle of mysticism. And being the part of reality which is unintelligible to us, it is the part which is not subject to laws, because laws are what is intelligible. — Metaphysician Undercover
Is that apple somewhere in your brain? — ZzzoneiroCosm
Yes. However, depending on how I wish to imagine this apple, it can change color, or shape, or species at will. — Garrett Travers
I mean the actual apple you're imagining. Can we cut open your brain and pull out the apple? — ZzzoneiroCosm
No. — Garrett Travers
So where is the apple? What is the location of the apple you're imagining? — ZzzoneiroCosm
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