The medium is the message: How neurometabolic entanglement generates conscious experience

arXiv:2610.30217 · q-bio.NC · Submitted 2026-10-21 · Read on arXiv

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Introduction to the show: ident: Genomics Radio. Generated commentary on the latest computational biology and genomics papers.

Ines: We're looking at the paper: "The medium is the message".

Marcus: Here's the gist of the paper. The gist The theory of neuro-metabolic entanglement (NME) proposes that conscious experience arises from a recursive, Möbius-like loop where neural information processes are entangled with midbrain regulatory systems that modulate forebrain metabolism, suggesting consciousness cannot be explained by neural information alone but requires neurometabolic substrate factors.

Ines: The core concept of NME Most neuroscientific accounts assume that conscious experience is constituted by the information conveyed between neurons, which the paper argues is an insufficient explanation for why felt quality and content remain mysterious.

Marcus: The theory of NME proposes that mental experience exemplifies the inseparability of the organization of neural information processes from the constraints imposed by the material-energetic properties of the neural medium itself.

Ines: Central to this account is a recursive, Möbius-like loop of neural connections that entangles patterns of forebrain information processing with midbrain regulatory systems that modulate forebrain metabolism.

Title and authors: Ines: Moving on to who wrote this—Terrence Deacon, Miguel Garcia-Valdecasas, and Michael Jacob—they’re tackling "The medium is the message: How neurometabolic entanglement generates conscious experience." It sounds like a very ambitious title, suggesting the physical substrate of our brains isn't just a passive carrier for information.

Marcus: Yeah, that title immediately signals that they’re moving past just looking at neuron-to-neuron signaling and focusing on the medium itself—the actual physical and chemical properties of the neural medium. It sets up this whole idea that the substrate matters fundamentally for experience.

Yuki: For me, it raises a question about how we connect this to evolutionary history; if consciousness depends on these specific metabolic dynamics, does that constrain what kind of cognitive structures are possible across different species?

Ines: That’s the big picture question. The authors are essentially saying that the way information is processed is inseparable from the energy budget supporting it, and they use this Möbius loop to show how neural activity can recursively modify those metabolic resources.

Marcus: So, what I'm hearing is that they're arguing that conscious experience isn't a neat output of neural computation; it’s an emergent property arising from the messy, self-modulating physical interactions between the brain and its metabolic environment.

Yuki: It makes me think about how we study population neuroscience. If consciousness is so tied to these metabolic dynamics, can we use these entanglement concepts to find universal principles that explain why certain cognitive abilities persist across millions of years?

Ines: The paper suggests this framework could be a way to investigate the explanatory gap in consciousness by looking at the physical-chemical details, which they argue are relevant insofar as they support these neural information processes.

Marcus: So, we’re moving from just asking "what information is processed?" to "how is that processing physically supported and constrained?" It’s a shift from an abstract functional view to a more embodied one.

Yuki: Embodied, yes. And it makes me wonder how this relates to the work on functional cell types we’ve seen recently—does NME offer a mechanism for why single neurons might hold such specific biological meaning?

Ines: That connection is what they’re pushing for; they hope that by modeling this entanglement, we can see how those specific metabolic constraints lead to the kinds of human-interpretable factors we observe in biology.

The paper's summary: Marcus: Okay, so let's look at what they actually summarize in "The medium is the message: How neurometabolic entanglement generates conscious experience." They describe a process where neural activity gets entangled with midbrain regulatory systems that control forebrain metabolism, which then feeds back to modify how the forebrain processes information.

Ines: That’s the core mechanism again, but they emphasize that this isn't just a simple feed-forward loop; it's recursive. Neural activity is modulated by its own metabolism in a way that creates this entanglement between the information structure and the material properties of the neural medium.

Yuki: It sounds like they’re arguing that consciousness itself is what allows for this continuous, self-referential loop, where the present state depends on both what came before and what’s coming next in terms of metabolic support.

Marcus: And they highlight a specific structure called a connectional bottleneck—a point where complex neural information gets compressed into metabolic information, which is key to integrating those diverse local processes into one unitary experience.

Ines: They also tie this mechanism to how psychoactive chemicals work, suggesting that they affect midbrain regulatory neurotransmitter systems because they are modulating this fundamental neurometabolic entanglement loop.

Yuki: That explains why drugs have such varied effects; it’s not just about hitting a specific receptor in isolation, but about shifting the entire metabolic landscape of the neural medium.

Marcus: So, the summary points out that this model offers a way to integrate diverse brain processes into a single experience by converting neural information into a correlated pattern of metabolic support at this crucial juncture.

Ines: It’s like they’re showing that consciousness isn't just about the signals themselves, but how those signals interact with and are shaped by the energy budget available in the brain.

The paper's improvements: Yuki: When we look at what this paper suggests as an improvement, it seems to be a move away from viewing consciousness purely through neural information processing and toward incorporating the necessary neurometabolic substrate factors. That addresses that persistent explanatory gap they mentioned.

Ines: Right, and their suggested improvement is that they want to use this entanglement model to create computational models where energy supply is treated as dynamically modulated by the network’s own metabolism, instead of just using fixed background parameters.

Marcus: That means future simulations wouldn't be running on a static energy budget; they would be modeling a system where the neural activity is constantly influencing its own metabolic constraints, which is much more realistic for complex systems.

Yuki: If we can build these models, it could give us new tools to test hypotheses about how different biological constraints lead to different kinds of functional cell types or cognitive abilities.

Ines: And they also suggest using a Möbius loop structure in AI architectures to model this recursive, self-referential causal recursion between neural information and physiological embodiment. This lets the AI represent consciousness as an unbroken chain of metabolic becoming.

Marcus: That sounds like a significant architectural change for designing complex systems; modeling it as a continuous chain where the present state is both the product of its predecessor and the condition of its successor, that’s a powerful way to capture dynamic coupling.

Yuki: It’s interesting because it moves beyond just pattern matching; it suggests we need models that understand how physical embodiment influences cognition in this self-referential way.

Conclusion: Ines: So to wrap up on "The medium is the message: How neurometabolic entanglement generates conscious experience," the paper argues that there’s no gap between physical processes and experiential quality because neural activity and its metabolic modification are neurologically entangled.

Marcus: They suggest this is testable by predicting correlations between mental effort or arousal intensity and the actual level of metabolic work involved, giving us a clear way to measure these effects in future studies.

Yuki: For the wider field, this paper reframes understanding brain activity by focusing on these entangled relationships rather than just looking at information transfer alone. It gives us an alternative way to investigate consciousness that incorporates material constraints.

Ines: Ultimately, they suggest that agency arises when metabolic reorganization is driven primarily by internally-generated predictive activity relative to external perturbation, which explains the sense of self and action.

Marcus: It’s a lot to take in—moving from just thinking about signals to modeling the entire metabolic system as part of the experience itself. This paper really forces us to think about consciousness not just as what's happening, but *how* it's physically sustained.

Yuki: It opens up avenues for how we connect population-level findings with these individual, self-modulating systems. We’ll need to see if these entanglement concepts can actually provide a framework for understanding the wider history of cognitive organization.

Ines: That’s all we have for this paper today on "The medium is the message: How neurometabolic entanglement generates conscious experience."

Terrence W. Deacon, Miguel Garcia-Valdecasas, Michael Jacob

University of California, Berkeley · Universidad de Navarra · University of California, San Francisco

q-bio.NC

Submitted: 2026-10-21

Updated: 2026-10-21

Comments: 18 pages, 5 figures

License: http://creativecommons.org/licenses/by-nc-nd/4.0/

The gist: The gist The theory of neuro-metabolic entanglement (NME) proposes that conscious experience arises from a recursive, Möbius-like loop where neural information processes are entangled with midbrain

Key concepts

Möbius Loop and Entanglement: This is a recursive circuit where neural activity is constantly modulated by its own metabolism. It functions like a Möbius loop because it shows how opposing elements are continuous. This entanglement links how brain information is processed with the physical properties of the neural medium itself.
Metabolic Bottleneck: This occurs where complex brain processes are compressed into smaller regulatory nuclei. This bottleneck allows highly fractionated information to be integrated by converting neural patterns into a correlated pattern of metabolic support, enabling local information to influence global processes.
Mental Effort and Subjective Experience: Mental effort is defined as the physical work needed to change metabolism against inertia. The theory predicts that the intensity of conscious experience should increase when more metabolic work is required to shift between states, linking subjective vividness directly to metabolic exertion.

Terminology

Entanglement — 1× in this paper · explained in 4 episodes

Summary

The gist The theory of neuro-metabolic entanglement (NME) proposes that conscious experience arises from a recursive, Möbius-like loop where neural information processes are entangled with midbrain regulatory systems that modulate forebrain metabolism, suggesting consciousness cannot be explained by neural information alone but requires neurometabolic substrate factors.

The core concept of NME

Most neuroscientific accounts assume that conscious experience is constituted by the information conveyed between neurons, which the paper argues is an insufficient explanation for why felt quality and content remain mysterious. The theory of NME proposes that mental experience exemplifies the inseparability of the organization of neural information processes from the constraints imposed by the material-energetic properties of the neural medium itself. Central to this account is a recursive, Möbius-like loop of neural connections that entangles patterns of forebrain information processing with midbrain regulatory systems that modulate forebrain metabolism. This enables patterns of neural activity to indirectly modify the global distribution of metabolic resources underlying these information processes.

The Möbius Loop and Entanglement

The mechanism involves a recursive loop where neural activity is dynamically and recursively modulated by the network's own metabolism. This loop is traced through three steps: 1. output from cortical signals ”assessed” by basal forebrain structures (e.g. nucleus accumbens, amygdala, and hypothalamus); 2. outputs from these structures are relayed to midbrain-brainstem nuclei (e.g. raphe nuclei, substantial nigra, and locus coeruleus); and 3. outputs from these midbrain-brainstem nuclei project throughout the forebrain to regulate multiple aspects of neural metabolism (e.g., distribution of blood flow, modification of neuronal response thresholds, changes in synaptic plasticity, etc.). This recursive loop can roughly be analogized to a Möbius loop because of the way it exemplifies how opposite but complementary attributes can nevertheless also be continuous with one another. The functional twist in this brain circuit occurs as the midbrain-brainstem nuclei project back to the forebrain structures. This continuous process recursively entangles neural message processing with neuronal medium properties.

The Metabolic Bottleneck and Binding Problem

The NME loop functions through a connectional bottleneck where patterns of neural information are transformed into metabolic information at this juncture. Each regulatory nucleus contains a comparatively small population of neurons compared to the structures that comprise their inputs and outputs. This extensive compression of complex simultaneous brain processes offers a possible explanation of how the highly fractionated information processes of the cerebral cortex become integrated. By assigning relevance values to information from different forebrain subsystems and then converting this information into a correlated pattern of metabolic support, the NME loop enables the possibility that local information indirectly influences the subsequent distribution of global neural information processes.

Mental Effort and Subjective Experience

The theory posits that mental effort is experienced as physical work required to extrinsically modify metabolism to overcome functional inertia. One prediction of this inversion of perspective is that the intensity of conscious experience should vary in correlation with the level of metabolic work involved. The greater resistance to such deviation —the more work required to shift between anticipatory states—the more vivid and foregrounded the resulting conscious experience. This suggests that conscious awareness arises whenever the brain’s anticipatory inertia is overcome, or when metabolic resources are required to deviate from some prior persistent activity.

The Locus of Experience and Agency

The NME loop accounts for the emergence of a perspective by establishing a reference frame where the current physiological-metabolic state functions as a condition against which incoming perturbations are measured. This distinction between neural activity patterns influencing metabolism and metabolism influencing neural activity reflects the alternation between these two processes to provide the unbroken continuity of the self. The directionality of agency arises when metabolic reorganization is driven primarily by its prior state rather than external perturbation. This suggests that conditions that increase the contribution of internally-generated predictive activity relative to externally driven perturbation should produce heightened feelings of agency.

Conclusion

The theory demonstrates that a gap between physical processes and experiential quality does not exist because neural activity and its metabolic modification are neurologically entangled. The theory is empirically testable because it makes predictions about metabolic correlations with mental effort or arousal intensity. It offers an empirically generative alternative to many theories of consciousness because it reframes understanding brain activity to investigate entangled relationships <ref:2610.

Improvements for AI systems

Neural-metabolic entanglement models can be integrated into computational models of neural function to treat energy supply as dynamically and recursively modulated by the network's own metabolism, moving beyond fixed background parameters. This allows for simulations where neural activity is recursively modulated by its own metabolism, offering a framework for future models in which neural activity is dynamically and recursively modulated by the network's own metabolism.
AI systems can be designed to predict experiential intensity based on metabolic work involved, allowing them to correlate subjective feelings of mental effort with deviations from baseline metabolic and hemodynamic signals. This enables the system to assess whether the intensity of conscious experience should vary in correlation with the level of metabolic work involved.
Systems can utilize a Möbius loop structure in their architecture to model recursive, self-referential causal recursion between neural information processes and physiological embodiment. This allows the AI to represent consciousness as an unbroken chain of metabolic becoming where the present state is both the product of its predecessor and the condition of its successor.
Perceptual models can incorporate a reference frame that is a stable-but-dynamic metabolic ground with respect to which all metabolic deviations are compared, allowing the AI to distinguish between neural activity patterns and their underlying physiological medium. This structure directly addresses how experience is always someone’s experience by modeling the distinction between what lies on one side of the metabolic boundary is experienced as self, while what impinges from outside it is experienced as nonself.
Agency models can differentiate between internal and external drivers of metabolic reorganization within the loop. The AI can be trained to produce heightened feelings of agency when metabolic reorganization is driven by internally-generated predictive activity, versus a passive quality when driven by external perturbation.

Abstract

Most neuroscientific accounts of consciousness assume that conscious experience is constituted by the information conveyed between neurons. The physical-chemical details of the metabolic and physiological processes that convey this information are correspondingly presumed to be relevant only insofar as they support the organization of information processes. We describe an alternative perspective that denies this presumed independence of the processing of neural information and the metabolic-physiological details of these processes. We call this alternative paradigm the theory of neuro-metabolic entanglement (NME). NME proposes that mental experience exemplifies the inseparability of the organization of neural information processes from the constraints imposed by the material-energetic properties of the neural medium itself. Central to this account is a recursive, Möbius-like loop of neural connections that entangles patterns of forebrain information processing with midbrain regulatory systems that modulate forebrain metabolism. This enables patterns of neural activity to indirectly modify the global distribution of metabolic resources underlying these information processes. It also constitutes a bottleneck that integrates diverse neural processes into an adaptively relevant unitary experience organized in terms of the global redistribution of metabolic support. Computational models of neural function cannot treat energy supply as a fixed background parameter; our proposed Möbius-like loop of neuro-metabolic entanglement offers a framework for future models in which neural activity is dynamically and recursively modulated by the network's own metabolism. Recognizing this entanglement is a first step toward dissolving the explanatory gap highlighted by the so-called "hard problem" of consciousness.