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"Out of meat, how do you get thought? That’s the grandest question." So philosopher Patricia Churchland once said, when speaking about the hard problem of consciousness.

Recently, Robert Lawrence Kuhn applied FQxI ways of thinking to his original field of neuroscience and consciousness studies. In August 2024, he published a comprehensive review of theories of consciousness in Progress in Biophysics and Molecular Biology (“A Landscape of Consciousness: Toward a Taxonomy of Explanations and Implications” Volume 190, August 2024, Pages 28-169).

Read more about how he put together this 175,000 word tome, and his conclusions in Robert's QSpace post.

Hi , it is a very intriguing topic and like the quantum gravitation, the hard problem of consciousness is one of the holy graals of this physics community. There are several relevant approachs like the works of Hameroff and Penrose and these microtubules and objective orchestrated reduction, The real big question is must we consider our actual limited sciences and the neurosciences , the knowledges of the brain , the physics and this QFT , GR and QM and so we must respect the conservation of energy and momentum and this and that or must we consider deeper parameters philosophically speaking. Personally I believe that yes , this consciousness is maybe deeper than just an emergent property of our actual sciences . The best thinkers having prondered the most important equations and works in physics and maths considered like Einstein a kind of god of spinoza, a god of nature transforming and coding the energy and matters, there is nothing of odd in considering this ,here is the list of a part of these thiners, Heisenberg, Einstein, Planck, Bohr, Born, Newton, Pasteur, Galilei, chrodinger, Maxwell, Lorentz,Cantor,Godel, Darwin, and so more , I repeat but this determinsitic reasoning about the pantheism has nothing to do with the religions wich are these religions at my humble opinion limited human inventions and not really true I consider personally this an infinite eternal consciousness in 0D , and this thing that we cannot define is outside and inside omnipotent of the universe, This reasoning is a little bit like in the pantheism, where we try to understand this thing beyond our understand by the laws of this physicality in respecting our pure determinism and in accepting these limitations, we cannot so affirm to know the truth, we must doubt , This consciousness is maybe simply the main driving force of all this universe and maybe , I tell maybe all is conscious at its level of conmplexity, this consciousnes is not like the intelligence and free will. Have we a synchronisation with this 0D , I dont know, must we consider a field like a string chord in 1D from this hypothetical infinite eternal consciousnes, must we consider this superfluidity and these spherical volumes like in my model and a connection with this 0D main field of consciousness of this infinite eternal consciousness, have we a simple emergent consciousness in a pure mathematical universe without god due to the complexity of brains and others . We don t know and that is why it is a fascinating topic. I doubt personally that our limited actual knowledges can answer , we have 100 years of relativity and we have improved the details in the sciences, physics, chemistry, biology, medicine , maths and so the details of this QFT, QM, GR ....but we must recognise also that even if we have improved the world in technology and others, we are still very limited and we now still so few. Maybe even all what we measure and observe are just emergent properties hiding deeper truths not known. That is why the measurement problem and the interpetations are important philosophically in accepting these said limitations, that implies even a kind of humility, We can compare our actual knowledges in QM like our knowledges about the universe and the cosmology, we have ranked stars and better understood the BHs and this and that, but we are far to know the details of all the complexity of this universe and the planets, stars..... so we can compare our knowledges like the travel inside this universe, even our own galaxy the milky way we don t know it in details, imagine the more than 7000 billions of galaxies, so it is the same for our knowledges about the QM and details . This conscioiusness fascinates me I must say and I have read many papers on arxiv. It is well that there are many persons searching and so that inmplies many ideas and models. The aim probably is to consider different philosophies and probably also to go farer than our actual models . Not easy that said .Maybe , I don t affirm, if my reasoning is ok , with this DE and DM added to this SM and that this fith force also is a reality and is informational , so that completes the puzzle but does not explain the consciousness but if this 0D is added omnipotent and that the SM is in a kind of synchronisation with this , it can answer , what is this synchronisation, what is the link , with the fith force or without , even just with the GR and QM and QFT , what is this link, why we are conscious, is it due to our brains and the QM or have we something outside in the universe, This reasoning implies even deep questions about the physicality, the non physicality, the souls if we have souls also and what about the evolution of all this, it is this also in my theory of spherisation, the optimisation evolution of the universe, If all evolves , so the souls also but of course I don t affirm, I just explain my points of vue,

    There seems to be at least two issues, when talking about consciousness:

    Firstly, no one seems able to positively define exactly what consciousness IS. What is needed is a definition of what consciousness IS as a definite starting point, a definition which could be changed, altered or improved, e.g. as a result of experimentation or philosophical analysis.

    Without a proper definition to work with, one could fabricate almost any old story about consciousness. So, a sloppy definition would be to define consciousness as a thing that emerges from microtubules, which pretty much says nothing about what consciousness IS.

    Secondly, and related to above issue, why is consciousness necessary, what function does it perform (if any)? Like a peacock’s tail, which apparently appeals to peahens, why would consciousness persist, and apparently be ubiquitous in living creatures, if it had no necessary function?

    ……………………

    My view is that, we are so immersed in our higher-level consciousness that we have lost touch with the basics. The basics are that existence doesn’t imply knowledge of existence: on the one hand there is what exists; and on the other hand there is knowledge (i.e. consciousness) of what exists. Knowledge of what exists in one’s surrounding situation, is a separate, necessary, function of the universe, needed even at the level of particles and atoms.

      Lorraine Ford Hi Lorraine, It is a complex puzzle and nobody has defined it really due to physical and philosophical limitations. The mystery of consciousness is one of the most challenging questions in both philosophy and neuroscience, with no single model universally accepted. There are several main theories but it is difficult because it is still a subjective experience if I can say , it is a state of being permitting the thoughts, the feeelings...

      .The fact that it is a subjective and qualitative experience is relevant, that is why we feel the joy, the pain, we hear the musics we create arts and imagine, we are able to create and take choices. We utilise informations and that permits reasonings and thinkings. It tells us so an important point, it is also a personal unique experience for each moments ,we feel ....
      Many models are interesting like the model about the informations and its integration with the brain networks ,the memory , it is mainly a model with the brain and its regions , it can be computed for the information processing but there is a problem about the subjective experiences even if the neurosciences tell that the brain capacity integrates the informations and its degrees.
      They quantize the informations and the complexity and rank the spectrum for each unique consciousness, but it seems that something is missing . The attention is important in this reasoning but can we explain the complexity of qualitative apsects of this consciousness with the awareness.
      David Rosenthal suggests that this consciousness arises due to higher orders of thoughts and mental states. Hameroff and Penrose them suggest in the Orch OR that quantum processes in the microtubules create inside the neurons quantum events and that these events are non computable , they are like souces of experiences. The relevance is that it is in this quantum mechanics instead of the classical computation , it is relevant because it gives a deeper road at my humble opinion that our actual standard neurosciences but we need proofs and empirical evidences .

      The real big question is why are we conscious after all , why we have a kind of survival mechanism also permitting behaviors and complex social and environnemental interactions, it seems the key, the outside and inside. There is a link and a deterministic logic. I beleive that this adaptation and survival and QM more the deeper parameters to add to our SM are a key with the informations if we find the primary informations, not only our actual BITs reasonings. In all the cases ,this consciousness like you told is not still defined and is mysterious , it is not just about the information processing and our qctual QM , but mainly about the expiences, so the subjectivity is important also. There is a logic in all this with the philosophy, the psychology, the evolution, the QM, the neurosciences, the informations theory and our deep unknowns in the quantum mechanics and cosmology,

        Lorraine Ford we are so immersed in our higher-level consciousness that we have lost touch with the basics. The basics are that existence doesn’t imply knowledge of existence: on the one hand there is what exists; and on the other hand there is knowledge (i.e. consciousness) of what exists. Knowledge of what exists in one’s surrounding situation, is a separate, necessary, function of the universe, needed even at the level of particles and atoms.

        This is so true. It is Gödelian in a way, a metasystem or even meta- meta-system. One, the hard problem is from inside, the other is from outside. In fact we have many ways to communicate information, not just nerves. The most basic system even lack a nerve system, and still it must be aware of the gradients in our environment, all + and -, using phases as instance.

        It is ridiculous to compare a basic state to a brainstate as instance, but many do this. Neurons are very specialized cells, with both analog and digital parts, like our bodies also are polar, and all cells are polar. Microtubulis are in all living structures I think, in bacterias a bit different only, and bacterias also forms superclusters like they are one individual..

          Steve Dufourny quantum gravitation, the hard problem of consciousness

          It is true quantum gravity as a reduced state resembles consciousness, the knowing part at least. If we are in a total chaos all becomes a bit overwhelming. This is maybe also why consciousness is seen as an ontological state in quantum, a result of the computation like a changed state, but how is this state changed? It would require some work, I think. Work is in epistemological part, all the asymmetries. But an adjoint system is symmetrical, it is one problem, so I look at non-Hermitian squeezed states and how they can become, divide, grow. etc. There you can more easily find the criteria for life (and consciousness so also?).
          The feeling part is different, more like an energizing part, transformations etc. Maybe the work?

            Steve Dufourny
            Hi Steve,

            I think that human beings are very capable: after all, we have sent missions to Mars!! So, I don’t agree with the mysterian view that consciousness is, and will eternally be, a mystery to human beings. While human beings certainly have limitations, e.g. physical and lifespan limitations, I don’t agree that understanding consciousness is beyond the capabilities of human beings.

            I also don’t agree that the answers to problems are necessarily to be found in the pages of old books, whether the old books are the Bible, or more recent books or papers on the subjects of (e.g.) philosophy or physics or neuroscience.

            Unlike the quest to find the solution to some intractable mathematical problems, consciousness is an everyday, minute by minute, second by second, all-encompassing reality for all ordinary human beings, (and other living things too). Why would it be surprising that people could understand consciousness?

            Just like there are individual particles, atoms, molecules and living things, consciousnesses are also individual. Consciousness can’t be thought of in the abstract; consciousness does not exist in a vacuum; consciousness exists in the real world; consciousness/ knowledge/ experience exists from the point of view of individual living things that are living in ever-changing and unique, real-world surrounding situations and circumstances.

            Most consciousness, that individual people experience, has no feeling or sensation; most of this consciousness is merely knowledge/ information about the ever-changing surrounding situation. This basic-level consciousness is collated point-of-view knowledge/ information about the physical surrounding world, further collated with knowledge/ information about the physical self.

            The collatory aspect of consciousness is very significant because equations and numbers have no inherent collatory aspect, where the collatory aspect is the knowledge that: (this and this and this and this) is simultaneously true. The knowledge aspect and the collatory aspect of consciousness is different to the equations and numbers aspect of the world.

              Ulla Mattfolk
              Rather than being an exclusively high-level, brains and microtubules thing, I think that low-level consciousness (and free will) should be thought of as necessary parts of a real-world system, necessary because the low-level real-world system would not work without them.

              Lorraine Ford Hi, Maybe it can be reached indeed with our actual quantum mechanics, sciences, neurosciences and QFT and GR but maybe we need deeper parameters to superimpose . When I spoke about the pantheism, It has nothing to do with the religions or old books like the bibble or philosophies or papers, we must recognise that our knowledges are very limited. The fact to have sent missions to mars is well ,but imagine the universe and its more than 7000 billions of galaxies, have we discovered and sent missions to the planets of our milky way and other galaxies, no ,we just observe the universe with tools , there is a difference with limited observations and the fact to be on a specific place.

              We have many unknowns , what we measure and observe are emergent properties and our correlated interpretations cannot conclude about the philosophy of origin of this universe nor about what is a particle, we dont know what are the foundamental objects or informations in a sense. Maybe this consciousness is beyond our capabilities , maybe not.

              I don t agree that consciousness is about knowledges,, we are not more conscious than a bee, we utilise our capabilities differently , the consciousness and intelligence are not the same. This consciousness is more than this, in all the cases it is like this that I see it , I don t affirm to know the truth, in fact nobody actually canm explain the primary cause of this onsciousness. We know yes that we are conscious but we have not found why and how . Regards

              Lorraine Ford The perspective in all the cases are intriguing and oblige us to drive into nuances . The human capabiltiy can maybe expand our understanding of insurmontable mysteries but these limitations are very real. For Mars we have only scrarched the surface of this neighbour.The observations of the universe are indirect.

              This consciousness is surely more than knowledges, it is mainly about subective experiences , like I told a bee and its awareness is not less vital and conscious than us, this consciousness seems a foundamental aspect of all lifes, not just the humans, The principles of this consciousness are not really identified , our intelligence allows us to categorize and solve complex problems but the consciousness is not this , it is a lived experience instrinsic and in the instant.
              The singular experiences are relevant and it is not about static knowledges of facts and equations. It is more like an emergent experience arising from deeper parameters.

              The objectivity is one thing and this subjectivity an other actually.,
              If the consciousness considering the pantheism is a foundamental property of this universe , so we are experiencing one aspect of the consciousness but the property is not owned by the individual beings, it is important like difference. And actually we cannot measure or interpret this consciousness, we have just assumptions.
              we lack a full understanding of what constitutes the "fundamental objects" or the information structures of reality. The origin of particles, fields, and, by extension, consciousness itself remains unresolved. We are limited by our observations, measurements and knowledges simply.

              That is why I think that a TOE is not possible because all this puzzle about the deepest philosophical, physical and mathematical limitations are not about knowledges, intelligence at my humble opinion only , The aspects of this reality tell us a truth about these said limitations. The mysteries of the universe imply the necessity to go farer in the dimensions probably but not easy even with the geometrical algebras and mathematical tools like the non commutativity,

                Lorraine said: we are so immersed in our higher-level consciousness that we have lost touch with the basics.

                You have forgot this? The basics does not require any nerves, not a brain. These are simple organisms.

                  Ulla Mattfolk You tell an important point about the life and the most primitive organisms like a bacteria, it is about communication and others and not nerves or brains only, that is why it is important to differenciate the intelligence and the consciousness, The levels of intelligence and complexity are one thing, the consciousness an other ,

                    Lorraine Ford consciousness is an everyday, minute by minute, second by second, all-encompassing reality for all ordinary human beings, (and other living things too).

                    Yes, this is a basic trait, the flow of conscious moments.

                    Chalmers already found two kinds of consciousness, the easy problem, about which you talk, and the hard problem, where the feelings are central. Also minute feelings and sensations are important like an attraction or repellation. In fact Damasio showed we cannot do decisions without small feelings.

                    The knowledge as information is not the hard problem. In fact Knowledge 'eats' the consciousness, so the more informed we are the less conscious we are? We reject possibilities that does not 'fit'. This if we take consciousness as fundamental from quantum or the measurements. There are models that talk of an optimization as fitness also. Hoffman is one.

                    This also leads to an image where consciousness is not computational at basic level. Esp.the part we see as subconscious is hard to compute. How do we compute feelings? Arithmetics and other ways meet Gödel... And also if we put some artificial number for consciousness, like a Pythagorean triangle, we have hard time finding its physical correlate. From our material view it is not credible. This leads to consciousness as something 'unseen' or dark if we use this metaphor from physics. Maybe a 5D? Actually this dimensional computing is interesting. It can be we have also more dimensions involved. Infinitesdimensional even? This is something we begin to explore now.

                    Many of our experiencies use lower dimensions also, like Seth talk of. Experience is not bound to 3D?

                    You notice the many ? I hope.

                    Steve Dufourny Intelligence versus consciousness.

                    In my thinking consciousness is the basis from which we select. Intelligence is how well we select. (This is also a kind of measurement problem. Even if we reject something does not mean it vanish from the consciousness pool, it just makes no subjective sense to ourselves. You know how difficult it is to communicate ideas.) They are two different. If we take an AI using equations it is our knowledge we insert in them, so they must be conscious at some basic equational level, but this is not enough? We should also be careful to compare to human consciousness here. We are so much more.

                    Turing test is passed already for AI, but there is an urgent need for better tests. We should though not wait human consciousness from them. We can maybe say AI-consciousness is possible?

                    Ulla Mattfolk it tells us a lot about what is the consiousness when we compare our human consciousness in relation to other forms of lifes, The interations with the environments and the stimuli for the survival can permit to give roads, So a bacteria for example utilise the stimuli but not a kind of developped thought or in all the cases a less developped thought for the choices and free will. These bacterias have a consciousness and a kind of intelliegence, but they are not the same, like for us. The difference between the bacterias and us is the complexity , we have a more complex momory, imagination, abstract thinking permitting even to understand the time and the past, present and future and so we make decisions , so the abilities are different but it is not a reason to tell that our consciousness is more than the consciousness of a bacteria, It implies debates of course about the philosophy and sciences , are we more conscious than a bacteria or are we all conscious at a kind of same level considering a foundamaental universal principle of consciousness. So in resume have we a special quality of consciousness or is it similar to the othe simplest organisms.
                    This consciousness is mainly an universal trait for me , It is not appeared in humans only , it is a thing starting in thre simplest organism, and even we can go farer in telling that it begins even at this quantum scale. We arrive at deep philosophical questions about the matters and the energy and the consciousness. If the consciousness and the responses to envoronments and adaptations, processings, simuli, survivals for the bacteria , plants , animals exist, so from this perspective, there is a common thread tyring all together with experiences and mechanism and complexities. and even needs. It is like if we had a vast universal interdependent web of consciousness with no higher or lower states of consciousness but utilised personally and singulary and subjectivelly speaking.

                      Steve Dufourny The objectivity is one thing and this subjectivity an other actually.,

                      Yes, 1p is very different from 3p perspective, and a big problem. Objectivity is the holy graal of science, but we observe or percieve subjectively, every cell does. If we draw a parallell to the famous cat analogy we are in the closed box, and the friends of Wigner are around us observing us and our behaviour, concluding if we are conscious or not. Observation is indirect, as you said. Now living systems have solved this by allowing a surplus of energy flowing through, forcing the system to be open. So now Wigner and his friends can now something about us, maybe just if we moves or not?

                      Open systems becomes a problem when we go to self-adjoint quantum systems, because also those must be open to 'live'? The systems form many-body systems etc. Non-Hermitian systems can be such?

                      Steve Dufourny These bacterias have a consciousness and a kind of intelliegence, but they are not the same, like for us. The difference between the bacterias and us is the complexity , we have a more complex momory, imagination, abstract thinking permitting even to understand the time and the past, present and future

                      A bacteria maybe has not much reason to predict the future, but also very primitive organisms can give warning signals, so this is a prediction like a 'knowledge in beforehand', so they can adapt their behaviours.

                      Actually also for us these predictions require most of our energy if we look to the brain work. It is important for us to predict our next step, and this is maybe what our subconsciousness does for us? Note the similarity to AI and its predictions of 'next step' or word.... I think this is really a quantum charachter, so AI are quantum computers already? We should maybe analyze better what the statistical entropy is?

                      I would recommend we start with a simple observation that consciousness may be the process of examining what is consciousness.

                        Steve Dufourny
                        Steve and Ulla:

                        I’m saying that:

                        • Just like higher-level matter is constructed out of smaller units of lower-level matter, higher-level consciousness is constructed out of smaller units of lower-level consciousness. And conversely, when (e.g. in death) matter breaks down into smaller units, consciousness also breaks down into smaller units.
                        • Consciousness and matter are different aspects of the world, requiring different methods of symbolic representation (symbols like AND, OR and IS TRUE are required to represent consciousness), but they always exist together. There is no free-floating consciousness.
                        • Low-level consciousness has a function; it is the necessary knowledge aspect of the world, whereby the world can know itself, i.e. know its own law-of-nature equations, categories (like mass and position), and numbers that apply to the categories.
                        • Consciousness is a basic aspect of the world like particles, atoms and molecules are basic, and like laws-of-nature, categories and numbers are basic. So, being a basic aspect of the world, the question of how consciousness feels, or doesn’t feel, is actually irrelevant.