Does Consciousness Travel Through Light?

By Charles Richard Walker

Over the last week, a remarkable story has been moving through the science press. I first came across versions of it under headlines suggesting that scientists had detected something quantum happening inside living cells. Then The Brighter Side of News ran a headline on September 22 that was difficult for anyone interested in consciousness, quantum biology, or electromagnetic biology to ignore: “Scientists propose a light-matter quantum state inside living cells.” ScienceAlert had covered the research several days earlier with a similarly provocative headline about Chinese scientists detecting a quantum state inside living cells.

Whenever the words “quantum,” “light,” and “living cells” appear together, I know what is going to happen next. Somewhere along the way, somebody is going to add “consciousness.” That is why this particular story caught my attention.

The news reports trace back to a bioRxiv preprint posted on September 15, 2026, titled A Quantum State of Mitochondria in the Living Cell, by Yu Yang, Zhenglong Gu, and Bo Song. The researchers examined living human cells, several types of mouse tissue, and isolated mitochondria. Using infrared spectroscopy, they found an unusual feature at approximately 71 terahertz that they could not assign to a known individual molecular vibration. The feature appeared in intact biological material and disappeared when the samples were dried and ground, destroying the organized mitochondrial structure. That is the observation. What the researchers think might explain it is where things become considerably more interesting.

Mitochondria are usually introduced in school as the “powerhouses of the cell,” which is one of those simplified descriptions that happens to be pretty useful. They are tiny structures inside our cells that help convert energy from food into ATP, the molecule cells use to power an enormous range of biological processes. Inside mitochondria are elaborately folded inner membranes called cristae. Those membranes contain phospholipids whose hydrocarbon chains include CH2 groups that have characteristic molecular vibrations near 87 THz. The researchers noticed something intriguing about the dimensions involved. Active mitochondria in the human cells they studied averaged around 2.2 micrometers in length. Their calculations placed the wavelength of 87 THz infrared light inside material with approximately the appropriate refractive index at around 2.3 micrometers. Mitochondria from heart and skeletal muscle were shorter, around 1.2 micrometers, which could still satisfy a standing-wave condition under their model.

That numerical relationship led them to propose that an intact mitochondrion might behave somewhat like a microscopic optical cavity. An electromagnetic mode could interact collectively with molecular vibrations in the highly organized cristae. If that coupling is sufficiently strong, the researchers propose that the system could form what they call a “mito-polariton.” A polariton is a hybrid light–matter state. Instead of describing the electromagnetic excitation and the material vibration as completely separate things, the coupled system develops states with characteristics of both. Polaritons themselves are not speculative objects; physicists routinely create and study them in engineered systems. What would be extraordinary here is finding a biologically functional version inside a working mitochondrion. According to the model, coupling to the 87 THz CH2 vibration should split that original mode into two branches, one near 71 THz and another near 103 THz. The predicted lower branch lands right around the unexplained 71 THz feature the researchers actually observed. The upper branch would sit in a region crowded with water and other biomolecular vibrations, making it much more difficult to distinguish experimentally.

Then the researchers did something even more interesting. They shined very weak mid-infrared light on living HEK-293T cells for ten minutes. At 71 THz, measured ATP increased by 10.3 percent. At 87 THz, ATP increased by 10.1 percent. When they used 53.7 THz as a control frequency, they did not see a statistically significant increase. There were eight samples in each condition. Now we have a story.

We have an unexplained spectral feature associated with intact mitochondrial structure. We have a mathematical model that places a predicted light–matter hybrid state at approximately that frequency. We have a frequency-specific biological effect in which infrared stimulation at the proposed frequencies corresponds with about a 10 percent increase in cellular ATP. What we do not have yet is proof that a functional mitochondrial polariton exists. That distinction gets lost quickly once a discovery moves from a preprint to a headline. The researchers have not directly measured the coherent dynamics of the proposed state. They have not cleanly detected both predicted branches. They have not established the lifetime of the proposed polariton. They have not yet demonstrated the entire causal chain connecting the electromagnetic excitation to the respiratory machinery and ultimately ATP synthase.

Heating and other non-quantum infrared effects still require further exclusion. The ATP experiment involved one cultured human cell line and only eight samples per condition. Most importantly, the result has not been independently replicated, and the paper has not yet been peer-reviewed. That does not make the research unimportant. It tells us where it currently sits on the scientific ladder. The authors themselves use stronger language in their abstract, saying that they “demonstrate a quantum state of mitochondria,” but the underlying evidence still consists of the spectral observation, the theoretical light–matter coupling model, and the ATP experiment. Their own conclusion also points toward future work, including the possibility that such a state could eventually prove relevant to energy metabolism or even biological information transmission. That last possibility is where this new research collided with something I had been working on myself.

I had recently spent time investigating a deceptively simple proposition: consciousness might travel through light. That investigation became my paper Light Between the Cells: The Electromagnetic Question of Consciousness. I was not setting out to prove that consciousness travels through light. I wanted to take the idea seriously enough to try to break it. If there really is some electromagnetic component to consciousness, then saying “light” or “energy” is not enough. Physics requires us to ask what is transmitting, what is receiving, what travels between them, how the biological system detects it, how the signal separates itself from noise, and what happens when we interfere with it. Once I began asking those questions, I discovered that the phrase “consciousness travels through light” was hiding several completely different hypotheses. An electromagnetic interaction could tell an organism something about the outside world. That is sensation. It could transfer information between biological structures. That is communication. It could alter excitability, metabolism, or the probability of biological state changes. That is modulation. Finally, an electromagnetic process might prove necessary to the physical organization underlying conscious processing itself. That would make it a candidate for constitution.

Those four things are not interchangeable, and confusing them can turn an interesting biological discovery into a theory of consciousness almost overnight. That distinction became one of the foundations of Light Between the Cells. The new mitochondrial research gives us an almost perfect example. Suppose the researchers are right. Suppose other laboratories reproduce the 71 THz feature. Suppose both predicted polariton branches are eventually detected. Suppose coherence and lifetime are measured directly. Suppose researchers establish that stimulating this state really does alter mitochondrial energy production through the mechanism being proposed. We would have discovered something remarkable about living matter. We still would not have discovered consciousness. Under the framework I developed in Light Between the Cells, this result would initially belong under modulation. An electromagnetic interaction would be changing cellular metabolism. That could be biologically important without being a sensory channel, without carrying information between cells, and certainly without constituting subjective experience. My original distinction was precisely that an electromagnetic influence on neuronal excitability does not establish that the field constitutes experience. The same logic applies here to mitochondrial metabolism.

This matters because “light inside living cells” immediately sounds adjacent to another subject that has attracted enormous speculation: biophotons. Living organisms really do produce extraordinarily weak photon emissions. They are usually called ultraweak photon emissions, or UPE, and they are substantially associated with oxidative metabolic processes. There is nothing inherently mystical about that. Chemistry can produce photons. The leap occurs when emission becomes communication simply because photons are present. Communication requires more than something producing light. A signal must contain structure. It must propagate sufficiently well to reach something else. There must be a biological receiver capable of detecting it. That receiver must distinguish the signal from background fluctuations, and the receiving system must do something reproducible with the information. The retina demonstrates just how sensitive biology can become to photons when evolution builds the appropriate machinery. That does not mean every photon emitted by a living cell belongs to an information network. As I concluded in Light Between the Cells, ultraweak photon emission is real, but no structured photonic code sufficient for cognition or consciousness has been established. The mitochondrial research does not provide that missing code.

The proposed mito-polariton is local. It depends upon mitochondrial structure, membrane geometry, molecular vibrations, and electromagnetic conditions inside or immediately associated with the organelle. Even if all of that survives experimental scrutiny, it does not establish photons carrying thoughts from neuron to neuron. It does not establish a hidden optical internet inside the brain. It does not establish consciousness riding around the nervous system on infrared light. It also does nothing to rescue the strongest version of the external-transmitter idea that I examined. That version imagines the brain somewhat like an antenna. Consciousness, or something necessary for consciousness, originates somewhere outside the organism and reaches the brain through an electromagnetic signal. Once I treated that as an engineering proposition instead of a metaphor, it ran into trouble very quickly. Any genuine external-carrier hypothesis requires a source, a physical signal, a pathway into the nervous system, some kind of biological transducer, a mechanism capable of distinguishing the signal from noise, and, critically, a measurable consequence when we remove the coupling. Without those components, calling the brain an “antenna” does not actually explain anything.

Humans remain conscious in darkness. Radio-frequency shielding does not extinguish awareness. People remain conscious inside magnetically shielded experimental environments. Human consciousness also persists under magnetic conditions dramatically different from the ordinary geomagnetic environment. None of that proves that every conceivable electromagnetic interaction with biology is irrelevant. It does tell us that no ordinary removable electromagnetic band has emerged as the external carrier necessary for consciousness. The mitochondrial result points somewhere else entirely. If the researchers are right, the interesting electromagnetic phenomenon is being generated or supported by biological architecture itself. The geometry of the mitochondrion matters. The organization of the cristae matters. The molecular vibrations matter. There is no mysterious broadcast arriving from outside. Nature already gives us examples showing that weak electromagnetic conditions can matter enormously when biology possesses the right transducer. Migratory birds are an excellent case. Experiments have found that anthropogenic electromagnetic noise can disrupt magnetic compass orientation in European robins, while shielding can restore it. There is even experimental evidence suggesting that particular rotations of Earth-strength magnetic fields can produce measurable changes in human alpha-band EEG activity, although that is very different from establishing a conscious human magnetic sense.

The lesson is not that electromagnetic fields secretly create consciousness. The lesson is that biology can build physical structures capable of responding to remarkably weak electromagnetic conditions. A bird responding to Earth’s magnetic field does not mean Earth’s magnetic field is the bird’s consciousness. Information entering consciousness is not the same thing as the existence of consciousness. Once I made that distinction during my own investigation, the question changed completely. Instead of continuing to look outside the skull for an electromagnetic transmitter, I began looking at the electromagnetic environment the brain creates for itself. That is where I think the consciousness question becomes considerably more interesting. Neurons operate electrically. Moving electrical charge generates electric and magnetic fields. Populations of neurons therefore continuously generate an endogenous electromagnetic environment. EEG and MEG work precisely because aspects of that activity are physically measurable. If those fields were simply consequences of neuronal activity and never affected the neurons producing them, we could reasonably treat them like exhaust. A computer generates heat while it calculates, but the heat ordinarily is not doing the calculation. The brain presents a more complicated situation because the relationship is not entirely one-way. Endogenous electric fields can influence neuronal membrane potentials and firing through ephaptic coupling.

The effect appears to be primarily local, and I see no reason to inflate that into a skull-wide wireless communications network when the brain already possesses axons, synapses, thalamocortical recurrence, and neuromodulatory systems capable of handling long-range integration. The important fact is much narrower: neuronal activity can generate an electromagnetic field, and that field can act back upon neuronal activity. That gives us a physical loop. Neural activity generates the field, and the field can influence neural activity. The existence of that loop does not prove an electromagnetic theory of consciousness. It does, however, mean that the endogenous field cannot automatically be dismissed as a completely passive shadow of neuronal computation. That led me to what I think is the much better question. Instead of asking whether consciousness “is electromagnetic,” we should first determine whether endogenous electromagnetic coupling performs any integrative work that our conventional descriptions of synapses, axons, neuronal firing, and neuromodulation fail to capture.

Perhaps it does not. The field effects could ultimately prove too weak, too local, or too redundant to contribute meaningfully to cognition. Perhaps they provide a useful local coordination mechanism while all important long-distance integration remains conventionally wired. Or perhaps field dynamics contribute some nonredundant component of neural integration that disappears when we describe the brain exclusively as a graph of neurons connected to other neurons. We do not presently know which answer is correct. That uncertainty is the experiment. As I eventually formulated the problem in Light Between the Cells, the decisive question is whether endogenous field coupling performs integrative work that synaptic and neuromodulatory connectivity cannot account for, and at what spatial scale that work stops. Even if that experiment eventually produces a spectacular positive result, however, we still have not solved consciousness. Suppose we discover that endogenous electromagnetic fields perform indispensable computational work in neural integration. That would reveal another causal layer of brain organization. It would not follow that the electromagnetic field itself is subjective experience. That is where the Hard Problem remains waiting for us.

For now, I think the most interesting thing about this story is what it allows us to say without exaggerating it. Living systems are electromagnetic systems. They generate fields, absorb radiation, emit photons, respond to electromagnetic conditions, and may exploit physical interactions we have only begun to characterize. The boundary between biology and physics was never as clean as our university departments made it look. None of that means scientists have discovered that consciousness travels through light. They have not found the frequency of consciousness. They have not found a quantum soul hiding inside the mitochondrion. They have not discovered a transmitter broadcasting awareness into our cells. What they may have found is another reason to take the electromagnetic architecture of living matter seriously.