Fascinazione e Teoria Polivagale — Luys 1890 e Porges 1994/en

🏥 Fonte primaria: opere del Prof. Jules Bernard Luys (1828-1897)
Questa pagina deriva dalle opere e dalle ricerche sperimentali del Prof. Jules Bernard Luys (1828-1897) — neurologo francese, medico capo del manicomio dell'ospedale della Charité di Parigi, autore di studi neuroanatomici fondamentali (l'omonimo «corpo di Luys» del cervello — il nucleo subtalamico — è una sua scoperta), e tra i principali sperimentatori scientifici della fascinazione magnetica e dell'ipnotismo medico nel tardo Ottocento parigino. Luys è uno dei pochi medici accademici di alto rango ad aver verificato sperimentalmente, su pazienti psichiatrici, i fenomeni della fascinazione di Donato. Documenti Drive ISI-CNV: 📁 Folder luys fascinazione — cartella Drive ISI-CNV con i materiali Luys, le ricerche alla Charité e gli articoli sulla fascinazione medica. Opere chiave di Luys (riferimento): J.-B. Luys, Recherches sur le système nerveux cérébro-spinal, Paris, Baillière, 1865. J.-B. Luys, Le cerveau et ses fonctions, Paris, Baillière, 1876. J.-B. Luys, Les émotions chez les sujets en état d'hypnotisme, Paris, J.-B. Baillière et fils, 1887. J.-B. Luys, Leçons cliniques sur les principaux phénomènes de l'hypnotisme dans leurs rapports avec la pathologie mentale, Paris, Carré, 1890. J.-B. Luys e G. Encausse (Papus), Du dédoublement des opérations cérébrales et du rôle isolé de chaque hémisphère dans les phénomènes de la pathologie mentale, 1888.

The polyvagal theory of Stephen Porges (1994) and the scale of hypnotic states of Jules Bernard Luys (1890) describe the same autonomic nervous system a century apart — and with a surprising mutual accuracy. This page analyzes the correspondence between the two models and the implications for understanding fascination and the Paret Method.

The two models compared

Luys' scale (1890)

Luys describes hypnotic states as a puits (well) with progressive levels of depth:

Luys Level	State	Main characteristics
0 — Surface	Fascination (Brémaud/Donato)	Anesthesia + light catalepsy + suggestibility; subject awake, eyes open; responds to commands
1	Catalepsy	«Waxy» malleable muscles; deeper anesthesia; optical regions active; eyes open, fixed
2	Somnambulism	Speaks, hears, responds; amnesia upon awakening; appearance of normality but full unconsciousness
3 — Deep	Lethargy	Apparent coma; total anesthesia; doubled muscle strength; paradoxical optical sensitivity
4 — Critical	Ultra-lethargy	Almost imperceptible pulse; life-threatening risk; total immobility

Porges' polyvagal scale (1994)

Porges identifies three autonomic circuits in evolutionary order of appearance, which activate in a hierarchical sequence:

Porges Circuit	System	Behavior	Evolution
1 — Apex	Ventral vagus (VVC)	Social engagement; communication; facial recognition; high vagal tone	Social mammals
2 — Intermediate	Sympathetic (SNS)	Activation; fight-or-flight; mobilization; cortisol	Primitive vertebrates
3 — Base	Dorsal vagus (DVC)	Defensive immobilization; dissociation; «apparent death»; analgesia	Reptiles; evolutionary ancestors

The level-by-level correspondence

The parallelism is precise and systematic:

Fascination ↔ Modulated Ventral Vagus

Donato's fascination — subject awake, responds, eyes open, suggestible — corresponds to a state of **ventral vagus with partial inhibition of the critical filter**. The social engagement system is still active (the subject sees, hears, responds), but the critical screening of the prefrontal cortex is lowered. This is exactly what Porges describes as the window of tolerance exceeded downward — not yet dissociation, but a reduction in decision-making autonomy.

Luys: «the subject belongs to you; you can give him all possible suggestions.» Porges: the active ventral vagus produces «states of safety» — the same state that allows engagement and reception.

Catalepsy ↔ Sympathetic transition

Catalepsy — muscle rigidity, hyperexcitability, increased strength — shows the signature of the **sympathetic system in activation**: muscle tension, neuromuscular hyperreactivity, visual hypervigilance. But it is already a dissociative form — the subject is «elsewhere» despite open eyes and tense muscles.

Luys measures: forearm strength goes from 10-12 kg to 20-25 kg in catalepsy. Porges would say: the sympathetic system is mobilized, but without an escape route — the freeze begins.

Somnambulism ↔ Active freeze

Somnambulism is paradoxical: the subject speaks, walks, responds — but is amnesic, unconscious, directed from outside. It is Porges' **active freeze**: immobilized mobilization. The sympathetic system is active (speaks, moves) but controlled by the dorsal vagus (no consciousness, no memory).

Porges describes this state in animals as «tonic immobility» — the active «playing dead»: the body moves but the mind is absent.

Lethargy ↔ Dorsal vagal shutdown

Lethargy is the exact counterpart of Porges' **dorsovagal shutdown**:

Apparent coma, relaxed muscles → total muscle resolution
Complete anesthesia → dissociative analgesia
Decreased heart and respiratory rate → vagal bradycardia
Paradoxically doubled muscle strength in certain muscle groups → this is exactly the DVC phenomenon: striated muscles lose voluntary tone but primitive spinal reflexes are enhanced

Porges: in dorsovagal shutdown, the autonomic nervous system «freezes» higher functions and the body falls into an energy conservation state — the same «apparent death» of reptiles. Analgesia is physiological: the DVC releases endogenous opioids.

Luys notes this: «cutaneous sensitivity disappears and it is as if it transformed into motor force» — he is describing the routing of nervous energy from higher circuits to primitive ones, exactly the polyvagal hierarchy.

Ultra-lethargy ↔ Deep shutdown (collapse)

Luys' ultra-lethargy — almost imperceptible pulse, life-threatening risk — is Porges' **vasovagal collapse**: the overexcited dorsal vagus leads to dangerous bradycardia, blood pressure drop, syncope. It is the extreme evolutionary response: «dying» to survive.

Luys: «the subject slumps, exhausted; breathing decreases in frequency... the pulse becomes imperceptible. I am right to tell you that one must never advance randomly on this ground full of surprises.»

Paradoxical dynamogeny: polyvagal explanation

The most enigmatic phenomenon for Luys — doubled muscle strength in lethargy — finds a precise explanation in polyvagal theory.

In a state of dorsovagal shutdown, voluntary cortical control of muscles ceases. But primitive spinal circuits — reflexes mediated by the dorsal root of the spinal cord, evolutionarily very ancient — become disinhibited. It is like releasing the brake: primary muscles, without the inhibitory modulation of the motor cortex, react with their maximum primitive strength.

Porges calls this «disinhibition of primitive spinal circuits during freeze» — the same mechanism that explains why a person in a dissociative shock state can lift impossible weights (documented cases of mothers lifting cars from trapped children).

Luys measures it without understanding the mechanism: 10-12 kg → 20-25 kg. The explanation was 100 years away.

The ébranlement and the mixed DV+VV state: the autonomic signature of fascination

The ébranlement — the sudden «nervous jolt» that Donato and Morselli describe as the core of the method — is neither a simple opening of ventral receptivity, nor a dorsovagal freeze that then resolves. It is something more precise: a **persistent mixed state** in which the dorsal vagus and ventral vagus coexist — each active in different domains simultaneously.

Morselli's signature: what a neurologist observes

Morselli, who was fascinated by Donato and observed dozens of subjects, precisely describes the objective signs of the fascinatory state. Two passages are crucial:

On the face during fascination: «The expression of the face becomes characteristic, that is, grotesquely serious, immobile and as if frightened or threatening (just look at Donato's fascinated subjects to be convinced).»

On the general state: «Many of Donato's fascinated subjects are precisely in this state, which resembles the half-sleep: they are awake, but equally undergo the influence of the magnetizer's suggestions.»

The expression is less lively, frozen, serious — not that of someone open and receptive in the full ventral sense. The physiognomy is that of **dorsovagal stupor** that persists. The subject executes orders — but not with the expressive richness of someone fully awake.

Luys confirms from the Revue d'Hypnologie: «L'expression générale qu'ils rêvent c'est l'étonnement profond» — the expression of the fascinated is **deep astonishment**, not ventral serenity.

The polyvagal structure of the fascinatory state

Donato's fascinatory state is not a sequence (DV then VV) — it is a **simultaneous co-activation** of both vagal circuits, each in separate domains:

Domain	Active system	Objective sign	Subjective sign
Facial musculature	Dorsovagal dominant	Frozen expression, «grotesquely serious», fixed wide-open gaze	«Astonishment», «paresis of the will»
Cutaneous sensitivity	Dorsovagal	Progressive anesthesia; insensitivity to pain	Sense of numbness, distance
Global muscle tone	Dorsovagal	Catalepsy, waxy rigidity; or conversely resolution (lethargy)	Sensation of «being made of lead»
Execution of commands	Minimal ventral active	Responds, executes, moves — but automatically	Does not evaluate, does not argue
Vocalization	Reduced ventral	Responds in monosyllables (Luys); monotonous voice	Speaks but «does not feel» speaking
Cortical critical filter	Both suppressed	No resistance to suggestions	No own intention

Why the dorsovagal does not resolve

In a normal orientation/freeze cycle, the nervous system evaluates the situation — and if safe — resolves toward the ventral. In Donato's fascination this does not happen completely, because:

The operator's fixed gaze **keeps the stimulus active** — neuroception cannot ascertain that the «danger» has ceased
The operator's powerful and sustained intention continues to send high-intensity signals
The ébranlement has produced a state of **stable autonomic disequilibrium** — not a peak that decays, but a new equilibrium point

The result is that the dorsovagal remains active as a substrate: anesthesia, mimetic immobility, fixed gaze, sense of astonishment. Above this substrate, the ventral is present just enough to execute — but not enough to regain critical control.

Morselli calls it «half-sleep» — it is precisely this: neither full dorsovagal sleep (lethargy), nor normal ventral wakefulness. It is the **zone of coexistence** of the two systems.

The mechanism of the ébranlement: beginning, not resolution

The ébranlement produces the initial spike — the abrupt interruption of the sympathetic-vigilant — but what follows is not a return to baseline. Instead, it produces entry into this stable mixed state:

Phase	System	Duration	State
Before	Sympathetic (normal vigilance)	—	Evaluates, discusses, resists
Ébranlement	Acute DV spike	Seconds	Arrest, stupor, paresis of the will
Fascination	DV + VV co-active	As long as maintained	Executes without evaluating; frozen expression; anesthesia; receptivity
Awakening	Full ventral	Immediate (breath, voice)	Return; amnesia; astonishment at having «lost time»

Fascination **is not a moment** — it is a **state** that the operator maintains active with the continuity of gaze and intention.

Morselli's test on himself

Morselli describes his first-person experience — and documents exactly the mixed state: «in a second session I reached the threshold of sleep» — he did not enter it because the dorsovagal was present (astonishment, initial anesthesia) but the ventral was sufficient to maintain a certain awareness. He perceived the ébranlement, felt the «paresis of the will», but did not collapse into deep lethargy.

It is the range in which Donato worked with healthy subjects: enough dorsovagal to suspend the critical filter and produce anesthesia/suggestibility; enough ventral to maintain executive capacity and the appearance of normality. A subject who collapses into deep lethargy loses the ability to execute complex commands — Donato brought them back up: «it is advisable to cut it off from time to time to prevent his subjects from going through all the subsequent phases up to somnambulism.»

Implications for practice

This precise understanding changes the reading of the technique:

The operator does not seek to «open» the subject (only ventral) — he seeks to **stabilize the mixed state** DV+VV in the optimal range
**Too much DV** (subject collapses) → loses executive capacity → must reduce intensity
**Too much VV** (subject returns to vigilance) → the critical filter re-enters → suggestion meets resistance
The frozen expression and fixed gaze **are not defects** — they are the diagnostic signature that the mixed state is active and stable

Luys had intuited the necessary calibration with the miroir rotatif: an instrument that maintains visual dorsovagal activation in a continuous and controlled manner, avoiding both collapse into lethargy and return to critical wakefulness.

The three levels of fascination in the Paret Method and the polyvagal hierarchy

Paret Method Level	Corresponding Luys	Corresponding Porges	Therapeutic application
Simple fascination	Fascination (wakefulness)	Modulated ventral vagus	Communication, rapport, conversational influence
Fascination with support (Ball of Light, Salamini)	Catalepsy/Somnambulism	Sympathetic transition → active freeze	Pain therapy, muscle blocks, emotional restructuring
Direct experimental fascination (Donato/Ghigi type)	Superficial lethargy	Stable continuous DV — not momentary shutdown	Anesthesia, autonomic dependence, catalepsy; DV maintained by continuous gaze; deliberate awakening

Critical note: in the Donato and Ghigi method, the dorsovagal does not resolve toward the ventral at the end of fascination — it remains continuously active for the entire duration («child attached to the breast»). The subject is released only by the operator deliberately. Di Pisa instead produces a calibrated DV spike and awakens immediately («we must not leave anyone there»).

Luys' transfert: a polyvagal intuition

Luys' transfert — the transmission of pathological states through an «agent» subject — is even more understandable through the polyvagal lens.

In a state of deep dorsovagal shutdown (lethargy), the subject's nervous system is maximally «plastic» — circuits are open, habitual patterns are suspended. Applying a magnet (physical sensory stimulus) in this state allows redirecting motor and sensory circuits toward new equilibria. This is what Porges calls «neuroception» — the non-conscious evaluation of safety that guides the autonomic nervous system.

The magnet has no mysterious properties: it creates a sensory stimulus in a maximally receptive nervous system. The «transfert» is the autonomic rebalancing produced by a physical stimulus during a state of shutdown — exactly like modern vagal neurostimulation.

Implications for contemporary practice

Polyvagal theory has revolutionized trauma psychotherapy (Bessel van der Kolk, Peter Levine, Pat Ogden). All converge on one point: trauma is stored in the body as a pattern of dorsovagal shutdown — dissociation, analgesia, immobility. The healing path goes through restoring access to the ventral vagus.

The therapeutic fascination of Donato → Luys → Di Pisa → Paret works precisely on this continuum, even without modern terminology. It produces states of openness (ventral vagus) and controlled shutdown (dorsovagal) that allow the restructuring of autonomic patterns.

Luys in 1890 wrote: «these are the secrets of 20th-century physiology.» He was right — only they were the secrets of the 21st.

Detailed analysis from primary sources

The complete analysis of primary sources in order of empirical authority (Donato → Morselli/Tanzi → Luys) is in: Lo Stato Fascinatorio nelle Fonti Primarie — Donato, Morselli, Luys

Sources and references

Luys (1890):

Porges:

Stephen W. Porges, «The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-regulation», Norton, 2011
Stephen W. Porges, «Orienting in a defensive world: Mammalian modifications of our evolutionary heritage. A Polyvagal Theory», Psychophysiology, 1995

Connections: