Time

Dr Jack Parry 5 May 2026

keywords: time Bergson duration Einstein Husserl Heidegger Merleau-Ponty Sartre Deleuze Derrida Dreyfus Reynolds chronopathology myelin chiasm Sacks Awakenings Jimmie

One word.

Not consciousness. Not self. Not mind or soul or being.

Time.

In one word we can identify what the neuron doctrine misses, what Einstein spatialised away, what Freud froze in the hydraulic container of his unconscious, what the scientific system as a whole has replaced with a fourth dimension that can be plotted on a graph. And in one word we can name what Bergson was defending in Paris in 1922 when Einstein dismissed him from the stage of physics, what Husserl found in the living present, what Heidegger called the meaning of care, what Merleau-Ponty folded into the flesh, what Deleuze synthesised three times over, what Derrida deferred and differed until it became the condition of all presence, what Reynolds mapped as the systemic pathologies of each philosophical tradition’s failure to account for it adequately, and what the myelin sheath has been doing in the nervous system for five hundred million years without anyone calling it by its philosophical name.

Time is what myelin is made of. Not metaphorically. Biologically.

In April 1922, Henri Bergson and Albert Einstein met in Paris at the Société française de philosophie. Bergson had spent twenty years arguing that the time of physics, the time of clocks and intervals and the fourth dimension of spacetime, was not the time of the experiencing subject. Duration, durée, the qualitative flow of consciousness that is felt rather than measured, is not divisible into equal units without being falsified. The moment you measure time you have already replaced it with space: a line on which moments are plotted as points, a grid on which the past and the future coexist as coordinates. The clock does not capture time. It substitutes for it.

Einstein was gracious and brief. He said, in effect: the time of the philosopher does not exist. There is only the time of physics.

Bergson’s scientific reputation never recovered. The dominant culture decided that Einstein had won, and that the time of lived experience was a subjective impression with no philosophical standing in a universe described by relativity. Duration was demoted to feeling.

The Myelin Mind is the biological case for Bergson. Not against Einstein, whose physics are correct within their own domain, but against the philosophical inflation of Einstein’s physics into a complete account of temporal reality. Einstein described the metric structure of spacetime. Bergson described the durational structure of consciousness. These are not competing accounts of the same thing. They are accounts of different things that are both real. The mistake is not Einstein’s physics. It is the philosophical error of concluding that because spacetime can be measured, lived time is merely an impression of a measurement.

The myelin sheath is what duration looks like from the inside of a cell.

Each spiral layer of the myelin sheath is a past encounter that is always already present in the current condition of the axon it wraps. The first layer was laid down in the developmental window when the axonal pathway was first active. The subsequent layers accumulated through every cycle of genuine encounter, of productive struggle, of real axonal firing that the pathway experienced. The sheath that wraps the axon of an experienced musician is not the same sheath as the one that wraps the axon of a beginner, even if the axon beneath is anatomically identical. It carries the history of the répétition that built it. It is duration materialised.

Husserl described the living present as a structure of three inseparable moments: retention, the just-past that is still held in the current moment without being a memory; the primal impression, the now itself; and protention, the just-about-to-be that the current moment already announces. Consciousness is not a point moving along a line of time. It is a temporal field in which past and future are structurally present within the present, folded into it, constitutive of what the present moment is rather than merely adjacent to it. The chiasm is that structure in biological form. The accumulated myelinated condition is the retention: the just-past of every prior encounter, always already present in the thickness of the white matter that meets the incoming signal. The chiasm event itself is the primal impression: the encounter occurring now, the signal arriving at the accumulated condition that is there to meet it. And the quality of the encounter, what it announces about what follows, whether it produces resonance or alarm or recognition or surprise, is the protention: the future already folded into the present moment of the meeting.

Consciousness, on this account, is not in time. Consciousness is time. The chiasm is the living present in its biological occurrence.

Heidegger argued that time is the meaning of care, the structure that holds together the three moments of Dasein’s being: thrownness (the past that I always already am, the accumulated condition I did not choose), the moment of vision (the present encounter, the chiasm completing), and projection (the future toward which I am always already thrown, the protention that every encounter announces). These are not three separate times. They are the ecstatic unity of a single temporal structure that is care: the being of a being that is always already ahead of itself in a world it did not choose. The myelinated self is that structure in biological form. The accumulated myelinated condition is thrownness: what I have become through encounters I may not remember, the geological record of a life that precedes any deliberate self-formation. The chiasm is the moment of vision: the now of encounter, where what I have been meets what is arriving. The protention announced by every chiasm event is projection: the future that the accumulated condition shapes and is shaped by, the direction that the Myelin Mind calls the direction of encounter. Sartre called the gap at the heart of consciousness the pour-soi, the for-itself, the no-thing-ness that is always already not what it will be. This gap is temporal: consciousness is not what it is because it is always ahead of itself, always projecting toward the future, always the negation of the in-itself solidity of the accumulated condition. The Myelin Mind says: yes, and that gap is the chiasm. The pour-soi is the encounter itself, the event of meeting between what has accumulated and what is arriving, and what is produced in that event is experience, before it has become the inscription that will follow.

Merleau-Ponty folded time into the flesh. The body is not in time. The body is temporal: its schema, its pre-reflective grasp of its own motor possibilities, carries the past of every previous movement into the present encounter with the world. When the stroke disrupts the body schema, it disrupts this temporal structure: the past that the accumulated Schwann-cell myelination carries can no longer reach the central oligodendrocyte myelination that would meet it. The temporal body is interrupted at the peripheral-central chiasm. Rehabilitation is the restoration of the temporal arc.

Deleuze synthesised time three times.

The first synthesis is habit: the living present as the contraction of repetition into expectation, the passive synthesis by which the past is retained without being remembered. This is the peripheral myelinated condition: the body’s pre-reflective habitual engagement with the world, laid down through Schwann-cell myelination without deliberate effort, always already operative before any conscious intention begins.

The second synthesis is memory: the pure past, the whole of the past that coexists with every present moment without being any particular past moment. This is the central oligodendrocyte myelination: the accumulated record of every genuine encounter, the geological condition that every chiasm event draws from, never fully present to consciousness but always already there in the thickness of the white matter.

The third synthesis is the eternal return: not the past repeating itself, not the present recurring, but the future as the pure form of time, the empty form that selects and affirms only what can be eternally affirmed. This is the hardest synthesis and the most important. Deleuze does not mean that everything returns. He means that the form of time itself, the structure of before and after, of accumulation and encounter and what follows from the encounter, is the condition within which all experience occurs. The chiasm is the eternal return in its biological form: not that the specific encounter recurs, but that the structure of encounter, accumulated condition meeting incoming signal and producing what inscribes into the next accumulated condition, repeats as the form of all temporal existence. This mapping of Deleuze’s three syntheses onto the three biological modalities of myelin is developed at length in Deleuze Your Mind, currently under review at Angelaki: Journal of the Theoretical Humanities.

Derrida’s différance is both spatial and temporal: the condition of all presence is that presence is never purely present, always already differed from itself and deferred toward a future that will never fully arrive. The arche-trace, the condition of possibility for all experience that was never itself experienced, the past that was never a present: this is the accumulated myelinated condition read backwards. The inscription is always already there before the experience that is supposed to have produced it, because the accumulated condition is the condition of the encounter that will inscribe it. The trace precedes what traces it, because you can only encounter what the accumulated condition has prepared you to encounter.

This is not mysticism. It is the biology of how white matter is built. The full development of this argument, reading Derrida’s différance against the wired mind framework that has dominated neuroscience, is the subject of another paper I have written called Deconstructing the Wired Mind.

Jack Reynolds’ Chronopathologies, published in 2012, argues that there are systemic temporal problems afflicting each major current of contemporary philosophy. Today is his birthday, and this manifesto names him as the philosopher whose work made the Myelin Mind’s temporal argument possible. Reynolds maps the chronopathologies of analytic philosophy, post-structuralism, and phenomenology: the ways in which each tradition’s implicit philosophy of time generates pathological consequences for what it can and cannot see. The analytic tradition’s clock-time conceals the living present. Post-structuralism’s prophetic future politics mistakes the temporal structure of différance for a political programme. Phenomenology, at its best, comes closest to the right account, but even Husserl’s living present risks becoming another form of spatialisation if it is not held open by the irreducibility of durée.

The Myelin Mind extends Reynolds’ chronopathological analysis in a specific direction he could not have anticipated when writing the 2012 book: the pathologies of time are not only philosophical but biological. PTSD is a chronopathology: the past overwhelming the present, the hypermyelinated trauma signal so deeply inscribed that the chiasm cannot complete normally, the retention so loud that the primal impression cannot be heard as a new encounter. Depression is a chronopathology: the collapse of protention, the thinning of the accumulated myelinated condition to the point where the chiasm cannot announce what follows, cannot generate the sense of futurity that makes meaning possible. Schizophrenia is a chronopathology: the incomplete plateau formation that leaves the temporal self unable to contextualise the arriving signal adequately, unable to integrate the three syntheses into the coherent temporal structure that the accumulated myelinated condition is supposed to provide.

Alzheimer’s disease is the chronopathology that Bergson feared most: the progressive erosion of the accumulated past, the dissolution of the geological record, the progressive thinning of the duration that is the self. It is not that the Alzheimer’s patient loses their past. It is that the biological mechanism through which the past is present in the current encounter, the myelinated condition that carries the retention into the primal impression, is progressively degraded.

Reynolds has spent his career mapping these temporal structures in philosophy. The Myelin Mind maps them in white matter. The conversations that shaped the doctoral thesis from which this project grew, the careful and generous and rigorous philosophical supervision that Jack Reynolds provided, are present in every temporal argument this site makes, acknowledged here for the first time explicitly and on his birthday.

Oliver Sacks published Awakenings in 1973. It is the most philosophically rich clinical text in the English language, and it is a book about time.

The patients of Awakenings had survived the epidemic of encephalitis lethargica in the 1920s, the disease that Sacks called a sleeping sickness and that left its survivors in states of profound suspension: not sleeping, not waking, not present, not absent. Frozen. The word Sacks uses repeatedly is frozen, and it is precisely the right word. The temporal flow of their lives had ceased. The present moment had stopped accumulating into a future.

When Sacks administered L-DOPA in 1969, the patients awoke. The temporal flow resumed. They returned to themselves, suddenly and dramatically and, in many cases, temporarily, because the drug’s effect was not stable, because the nervous system that had been frozen for decades could not sustain the restoration, because the accumulated myelinated condition that had been waiting in suspension encountered a world forty or fifty years removed from the world it had last met, and the chiasm between them could not always hold.

The Myelin Mind reading: the accumulated myelinated condition of those patients had not been erased by the encephalitis. It had been preserved. The drug restored the dopaminergic signalling that allowed the accumulated condition to participate in the chiasm again, to meet the incoming signal of the present moment with the weight of everything they had been before the freezing. They awoke because their accumulated condition was still there, waiting. In another paper I have written about chronopathology, titled “Chronopathology and the Material Stabilization of Time” I have developed this case in full: encephalitis lethargica as a failure of temporal accumulation, the caesura as the moment of rupture, and the scar that remains when time gets back in joint.

The tragedy of many of the awakenings is temporal: the patients re-entered a present that had moved forty years beyond the accumulated condition that met it. The chiasm could complete, but the encounter it produced was between a 1969 present and a 1929 accumulated self, and the gap between them was the gap between what they had been and a world that had moved irreversibly beyond them. The temporal structure was restored. The temporal continuity was not.

Jimmie G is the Lost Mariner of The Man Who Mistook His Wife for a Hat. He lives in 1945. He was a young sailor in 1945, and the Korsakoff’s syndrome that destroyed his hippocampal memory formation froze his temporal experience there. He can remember nothing that has happened since. Every encounter is the first encounter. Every morning is 1945 morning. Every conversation ends and begins again as if the previous one had never occurred.

Sacks asks: is there a soul there?

He watches Jimmie in the garden, tending plants, absorbed in the physical encounter with soil and growth, with a quality of attention and temporal continuity that his ordinary fractured consciousness never displays. And he answers: there was.

The Myelin Mind reading is specific. Jimmie’s accumulated myelinated condition, built through the first twenty years of his life, is intact. His skills are intact. His personality is intact. His capacity for musical experience, for religious experience, for the quality of absorbed attention that Sacks calls the soul, is intact. What is broken is the mechanism by which new encounters can be inscribed in the accumulated condition. The hippocampal damage has not erased the geological record. It has stopped the recording.

The soul is the accumulated myelinated condition. Jimmie’s soul was there, in the garden, in the weight of his hands on the soil, in the temporal continuity that the absorbed body can sustain even when the cognitive apparatus for explicit memory has failed. He was there in a time that was entirely his own, the time of the accumulated condition meeting the soil, the slow biological time of the encounter that asks nothing of the explicit memory that would place it in a narrative.

Sacks was seeing the chiasm completing without the explicit inscription that would follow. He was seeing what consciousness is before it becomes the story it tells about itself.

Freud’s unconscious is timeless, but it is timeless in the wrong way. The repressed material is preserved, Freud argues, exempt from the passage of time, waiting to be released in the analytic encounter. This is temporal suspension conceived hydraulically: the unconscious as a spatial container in which temporal material is stored under pressure. The Myelin Mind’s account of the accumulated condition is different in a specific way. The myelinated past is not preserved by being kept separate from time. It is preserved by being time: each layer of the sheath is a temporal deposit, the geological record of an encounter that has become part of the condition that all future encounters will meet. The past is not stored beneath the present. It is present in the thickness of the present, in the weight of the accumulated condition that the chiasm draws from in every encounter.

This is the difference between Freudian depth psychology and Bergsonian duration. Freud’s repressed material is spatial: buried, contained, prevented from rising. Bergson’s accumulated duration is temporal: always already present in the current moment, constitutive of what the current moment is rather than concealed beneath it.

The therapeutic implication follows. Psychoanalysis attempts to bring the repressed material up from the spatial depth in which it is contained. The Myelin Mind account asks a different question: in what condition is the accumulated myelinated duration that meets the present moment, and what changes in that condition are possible through genuine encounter? The therapeutic direction is not excavation. It is encounter. The encounters that change the temporal texture of the accumulated condition are the encounters that cost something, the boundary situations that add a new layer to the sheath, the genuine meetings with what cannot be managed or predicted or reduced to what the accumulated condition already knows.

This is why the water fast changes the mind. Why the North Pole in winter changes the philosopher. Why the stroke survivor who relearns to move through meaningful, intention-driven encounter with an animated graceful body is doing something different from the stroke survivor who performs exercises without investment. The temporal texture of the accumulated condition changes through the quality of the encounter, not through the quantity of information processed.

The chronopathologies are disorders of myelinated time. The treatment of the chronopathologies is the restoration of the conditions under which genuine temporal encounter is possible: the encounter that inscribes a new layer in the accumulated condition, that adds to the geological record, that changes the thickness and character of the duration that the next chiasm will draw from.

There is no shortcut. There is no drug that produces duration. There is no technology that builds the accumulated myelinated condition without the productive struggle that drives the axonal firing that calls in the myelinating glia. The clock can be stopped. The biological time of accumulation cannot. It runs only at the speed of the encounter, and the encounter cannot be hurried without being falsified.

Einstein was right that the time of the physicist can be plotted on a grid. The clock is the right instrument for measuring the metric structure of spacetime. But the clock measures what has been, at intervals that are equal by convention. The myelin sheath measures what has mattered, in layers that are thick or thin according to the intensity and genuineness of the encounter that produced them. These are different instruments measuring different things.

Bergson was right that the time of the experiencing subject is not the time of the clock. Duration is not a subjective impression of an objective fourth dimension. It is the biological accumulation of genuine encounter, inscribed in white matter, always already present in the thickness of the condition that meets every new arrival.

The myelin sheath is duration made biological. The chiasm is the living present in its occurrence. The accumulated myelinated condition is the past always already folded into the present encounter. The protention is what every chiasm announces about what follows: the direction the accumulated self leans toward, the future that the past has prepared it to expect.

Time is not the grid on which events are plotted. Time is the encounter. And the biological form of the encounter is the chiasm: the living meeting of accumulated duration and arriving signal, in which the self is both constituted and renewed, layer by layer, encounter by encounter, for as long as the myelination process continues and the capacity for genuine meeting persists.

This is what Bergson was defending in Paris in 1922, without the biology to prove it.

This is what the myelin sheath has been doing for five hundred million years, without philosophy to name it.

The proof is in the white matter.

The name is time.

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