Paret Movement Analysis/en

The Paret Movement Analysis (PMA) is the non-verbal observation system developed by Marco Paret as a diagnostic and operational tool of the Paret Method School. It integrates into a single framework the reading of gesture, posture, lateral asymmetry, touch, and underlying autonomic states, providing the operator — magnetizer, hypnotist, trainer, therapist — with a grid for reading the person's habitual trance and an operational guide for choosing the appropriate technique.

On a theoretical level, PMA is situated at the intersection of the European magnetic tradition (reading the body as a magnetic field and diagnosing fascination), the Polyvagal theory of Stephen Porges (the physiological grammar of autonomic states), the system of six character types of the School, and a vast contemporary literature on touch, cerebral lateralization, and non-verbal communication. On an operational level, it is what the operator observes when entering into a relationship with the person — the first gesture of magnetic practice, before any induction or technique.

I. The principle: the body does not lie

The founding principle of PMA is expressed by Paret in an essential formula: "the body does not lie". While the rational mind is governed by introjected values, guilt, social rules, and adaptations that can mask the real state, every gesture expresses a potentiality that the trained operator must be able to grasp. PMA is the discipline of this reading: reading behind the discourse, through movement, posture, breath, muscle tone, and touch.

This principle is not exclusive to the Paret Method — it resonates with the Reichian tradition, with polyvagal theory, with somatic phenomenology — but it receives in the Paret Method an original technical systematization that intersects gesture observation, lateralization reading, typological diagnosis, and technical choice of the hypnotic access door.

On a neuroscientific level, the Paretian principle finds its foundation in two complementary theories of contemporary cognition. The theory of somatic markers by Antonio Damasio (Descartes' Error, 1994) shows that cognitive decisions are modulated by automatic bodily signals that the brain reads before conscious rationalization — the body, literally, knows before the mind and expresses this knowledge through autonomic, postural, and gestural configurations readable by the experienced observer. The theory of embodied simulation by Vittorio Gallese and the mirror neurons (Rizzolatti and Gallese from 1996 onwards) shows that the observer's brain motorically simulates the observed gesture — recognizing another's gesture is, neurologically, executing it internally, and from this comes immediate and direct affective understanding. PMA is in this sense a discipline of trained embodied simulation: the trained magnetizer does not interpret from the outside, but reproduces internally the configuration of the other and from there understands it. The page Iain McGilchrist e la dualità emisferica presents the broader philosophical framework in which this embodied reading is situated — the relative dominance of the two cerebral hemispheres as two different ways of inhabiting the world and expressing it in the body.

II. The three fundamental categories of gesture

Paret distinguishes three families of gestures that correspond to three fundamental relational modalities and three primary representational systems.

Volitional Gesture (V) — the voluntary gesture

The voluntary gesture is an intentional, directed, outwardly oriented movement. It includes pointing, offering, the cut (hand slicing through space), and generally all gestures that construct relational space or direct attention towards a precise point. On a sensory level, it is predominantly associated with the visual modality (V). On an autonomic level, it corresponds to the V+S configuration of the polyvagal map — sympathetic mobilization regulated by ventral engagement — and is characteristic of types that the School classifies as active-relational (Challenger, Tribal, Communicative).

Analytical Arguing Gesture (A) — the analytical gesture

The analytical gesture is a more reflective movement, often accompanied by self-adapters (self-adjustment gestures: touching one's face, fixing hair, drumming fingers). It includes the arch gesture (the arched gesture accompanying argumentation), gestures close to the body, and circular micromovements. On a sensory level, it is predominantly associated with the auditory modality (A) and verbal introspection. On an autonomic level, it corresponds to an introverted-ventral configuration with contained micro-sympathetic activation, and is characteristic of the Cartesian (5) and Narcissistic (1-6) types.

Caring/Cup Gesture (C) — the caring gesture

The caring gesture or Cup Gesture is the hand that closes into a cup, that welcomes, that contains. It includes the hug, the hold, the affectionate grab, open hands turned upwards in offering. On a sensory level, it is predominantly associated with the kinesthetic modality (K). On an autonomic level, it corresponds to the pure V configuration (receptive ventral engagement) or V+D (intimate quiet), and is characteristic of the Idealist (2), Sensitive (4-9), and Relational (7-2 kinesthetic) types.

The enneagram in movement

The combinations of these three families generate the grid of eight postural houses that Paret calls the Moving Enneagram — VA, CV, VC, CA, AV, VC, AK, CA — each corresponding to an enneagram type and a cerebral lateralization configuration. This grid is detailed in the page The Moving Enneagram of Paret.

III. The postural encoder: axes of movement

Independently of the three gesture families, PMA reads the global body movement along four cardinal axes, each with a precise diagnostic value.

Forward — hyperactivity, choleric orientation, orthosympathetic predominance, fire-choleric type in the nomenclature of ancient temperaments. On a polyvagal level, it is the Sulfur configuration of the page six character types.
Backward — fear, withdrawal, defensive parasympathetic predominance. Polyvagally, it corresponds to increasing dorsal tone with sympathetic vigilance.
Sinking — sadness, hypoactivity, water-lymphatic predominance, polyvagal Salt type (conservative dorsal vagus).
Upper Movement (movement upward) — joy, activation, Sanguine type in Hippocratic nomenclature, polyvagal V+S configuration.

To these four cardinal axes are added secondary modulators: circular movements (continuity, mercurial fluidity), rhythmic movements (vagal regulation), micromovements (introspection, introverted configuration), pointing vs open palms (directivity vs receptivity).

IV. Hand-over-face and cognitive mental states

A specific section of PMA is dedicated to the hand-over-face gesture — gestures of the hand brought to the face — which according to contemporary research (Mahmoud et al., 2011) constitute a reliable indicator of cognitive mental states.

Systematic observation distinguishes:

Passive gestures (resting the open or closed hand on the face, supporting the chin) — associated with relaxed moods, rarely present in active cognitive states.
Active gestures on the face (stroking, tapping, touching facial regions, especially with the index finger) — associated with precise cognitive states: thinking (more frequent with the index finger touching the periocular region or temple), doubt or uncertainty (hand touching the chin, lips, mouth).

The distinction between hand-shape, action (static vs. in motion), and the region of the face touched is an original diagnostic cue that PMA has integrated from research on affective computing and non-verbal reading of cognitive states.

V. Lateralization and typological diagnosis

A deeper level of PMA — the one that makes it a diagnostic tool and not merely descriptive — is the reading of cerebral lateralization through three rapid tests that every person performs spontaneously:

Arm folding test — which forearm is on top when the person crosses their arms? Indicates adaptability (more or less available for adaptation to others).
Hand clasping — which thumb is on top when the person interlocks their fingers? Indicates cognitive control over emotions (right thumb on top → left hemisphere more active in inhibiting emotions, a more "neurotic" configuration according to Bakan 1976, Galin 1974).
Ear preference — which ear does the person spontaneously bring to the phone or to listen better? Indicates predominant attention to tones (left ear / right hemisphere / introvert) vs attention to words (right ear / left hemisphere / extrovert).

The combinations of these three dominances generate the eight typological acronyms (DSS, SDS, DDS, SSS, DSD, SSD, DDD, SDD) that Paret cross-references with the enneagram, MBTI, and ancient temperaments in the The Moving Enneagram of Paret.

The broader philosophical-neuroscientific framework in which this diagnostics is situated is that presented by the psychiatrist and philosopher Iain McGilchrist in the page Iain McGilchrist e la dualità emisferica. According to McGilchrist, the two hemispheres do not differ in content (the old popular dichotomy of language/images is scientifically outdated) but in ways of paying attention — the left hemisphere ("Emissary") exercises a narrow, manipulative, categorical attention; the right hemisphere ("Master") a broad, contextual, relational attention. PMA is therefore, in this reading, the discipline of recognizing which part governs in the observed subject — and correlatively, of the technical choice of the access door that re-establishes the relationship between the two parts.

The four adaptation styles

Combining arm folding and hand clasping, PMA distinguishes four adaptation styles that have direct consequences on hypnotizability and the choice of access door:

Individualist (D-S) — less trust, internal reference, lower hypnotizability if a field of respect and autonomy is not established first
Autonomous (D-D) — self-control, autonomous internal reference, hypnotizability via self-induction
Consensual (S-D) — external control, hypnotizability via directive paternal door
Depending (S-S) — trust, external reference, hypnotizability via receptive maternal door

This grid has direct clinical application: choosing the wrong induction style for the adaptation type drastically reduces the effectiveness of hypnosis and can activate resistance.

VI. Postures, temperaments, magnetic valence

PMA integrates further postural indicators documented by contemporary research (Riskind & Gotay 1982; Briñol, Petty & Wagner 2009; Canales et al. 2010):

Ideal or lordotic-kyphotic posture — associated with extroversion, regulated sympathetic predominance
Sway back / flat back posture — associated with introversion, withdrawal configurations

To these indicators, the School adds the classical vocabulary of the European magnetic tradition:

Electric valence — choleric predominance, direct gestures, pointing, fast rhythm. Corresponds to the right thumb on top in hand clasping (dominant left hemisphere).
Magnetic valence — lymphatic predominance, welcoming gestures, cup, slow rhythm. Corresponds to the left thumb on top (dominant right hemisphere).
Electromagnetic valence — sanguine balance, regulated mobilization.
Diamagnetic valence — melancholy, withdrawal, poor mobilization.

This vocabulary is not metaphorical in the magnetic tradition: it describes autonomic configurations that polyvagal theory today re-describes in terms of ventral, sympathetic, and dorsal set points.

VII. Touch as a diagnostic and therapeutic datum

A large section of PMA is dedicated to the reading of touch — both the touch the operator uses, the touch the person gives to themselves (self-touch), and the touch observed in the family dyad. This section relies entirely on the research documented in the page Touch e sistema nervoso autonomo, which details the neurobiological effects, evolutionary development, and communicative functions of touch.

In operational summary, PMA distinguishes:

Type of touch — affectionate, instrumental, stimulating, intrusive, rhythmic, static
Self-touch localization — the body area touched and the hand used, with diagnostic value (laterality of self-touch correlated with prenatal maternal stress, Reissland et al. 2015)
Frequency and duration — indices of relational state and attachment
Reciprocity — the touch–response pattern that reveals the quality of the relationship

Hertenstein's decoder of the eight distinct emotions communicable through touch (anger, fear, happiness, sadness, disgust, love, gratitude, sympathy) is integrated into PMA as an operational grid: each emotion has its specific body area, intensity, movement pattern, and duration.

On the level of neural substrate, PMA integrates the discovery of C-tactile fibers (McGlone, Olausson, Morrison 2014; Walker et al. 2017) — the class of unmyelinated afferents specific for slow, affectionate touch (3 cm/s, 32°C) that selectively activate the posterior insular cortex and mediate oxytocin release, described in detail in the page Touch e sistema nervoso autonomo. This data is crucial for training: the technique of magnetic touch is not generic — it is precise in speed, rhythm, temperature, and localization.

On a clinical level, the framework of somatic experiencing by Peter Levine (Waking the Tiger, 1997; In an Unspoken Voice, 2010) and the work of Bessel van der Kolk (The Body Keeps the Score, 2014) provide the contemporary vocabulary to describe what the magnetic tradition has always operated: the completion of interrupted defensive responses through touch and relational containment — a phenomenon described in the page Movimento autonomo della crisi.

VIII. Eye movements, gaze, blinking

The PMA framework is completed by the observation of eye movements and gaze:

Eye movements pattern — frequency of movements to the left (associated with greater hypnotizability, in non-neurotic subjects; Bakan 1976)
Gaze avoiding vs gaze searching — patterns associated with introverted-neurotic vs receptive configurations
Preferential visual attraction — towards positive faces (sanguine-stable configurations) vs towards negative faces (neurotic, depressive, phobic configurations)
Blinking rate — low in high concentration and emerging hypnotic states, high in states of anxious vigilance
Foveal vs peripheral gaze — narrow focal gaze (attentional task configurations) vs soft peripheral gaze (trance and presence configurations)

The soft peripheral gaze is one of the main indicators of the state of Integral Presence™ and of the availability to enter magnetic fascination in the tradition of Donato, Caravelli, and Di Pisa.

IX. PMA as a grid for technical choice

The operational value of PMA is not in classification for its own sake, but in the guide to technical choice. Once the prevalent type is recognized — through the three lateralization tests, observation of the dominant gesture (V, A, C), postural axis, touch, and gaze — the operator can choose:

the appropriate hypnotic access door (maternal, paternal, mental), as described in the page Ipnosi, Teoria Polivagale e Liberazione Somatica
the type of induction (verbal, non-verbal, magnetic, fascinatory, postural)
the privileged communicative channel (KV, KA, VA, AV, AK according to the Moving Enneagram nomenclature)
the specific techniques of the Paret Method most suited to the type: Crisi Mesmerica for types with blocked autonomic discharge, Caduceo ermetico for types needing tonic postural immobilization, Magnetic Alignment for types with dysregulation of the nuchal-sacral axis, Tummo for types capable of contained self-regulated mobilization

PMA is in this sense the operational bridge between the initial observation of the subject and the choice of the appropriate technique. It is not an abstract theory — it is the tool that the School operator uses in the first twenty seconds of the encounter to orient everything that follows.

X. Profiling and compatibility

A final operational element of PMA is the compatibility profiling between two people (for example in couples, corporate coaching, group dynamics). The procedure is:

Observe the three basic crosses (arm folding, hand clasping, ear preference) — determine the three-letter acronym
Observe the figure of clasped hands (parallel vs overlapping palms, cooperative vs competitive interlocking)
Determine the dominant postural position (sinking-fear, up-choleric, etc.)
Observe hand movements during the exchange
Evaluate position in time (orientation to past, present, future in gestures)
Adopt the compatibility figure — the operator can consciously assume the mirroring or complementary posture to facilitate engagement

This compatibility profiling is one of the most characteristic applications of PMA in the School's training and coaching contexts, and applies both in the operator-subject relationship in hypnosis and in general relational dynamics.

XI. The contemporary academic bridge: Action Types, Marsman, Messinger

The Paret Movement Analysis dialogues with some lines of contemporary research that have academically formalized aspects that European magnetic practice has always known operationally. Three strands are particularly relevant.

Action Types and motor preferences (Marquet, Hippolyte, Bertrand During, INSEP)

The French school of Action Types — founded by Ralph Hippolyte, systematized by Bertrand During (Sorbonne) and applied to high-performance sports by the INSEP (Institut National du Sport, de l'Expertise et de la Performance) in Paris — has developed a typological model based on motor preferences as stable neuro-predispositions observable in gesture, posture, and breathing.

The foundational book is Marquet — À chacun son cerveau, sa réussite (2013), which presents a model of motor profiles lateralized and organized around body axes: pelvis-shoulder axis, proximal vs distal mobility, dominant foot-hand support, respiratory rhythm. The academic thesis of Lussiana (2016, Université de Franche-Comté) provided further experimental validation of the model, and numerous INSEP documents apply the system to performance sports.

Particularly interesting for PMA is the terminology used in the study of the golf swing: "Profil Terrien ou Aérien dans le swing" — the distinction between "terrestrial" players (grounded, slow, powerful, dominant pelvis-feet axis) and "aerial" players (mobile, rhythmic, light, dominant pelvis-shoulder axis). This nomenclature coincides precisely with the Earth/Air/Water/Fire typology that the School uses in its internal non-verbal analysis documents. Action Types thus provides PMA with a contemporary French academic confirmation of a distinction that the European magnetic tradition has always practiced.

The School's PMA differs from Action Types in its initiatic and magnetic dimension (Action Types remains in sport and performance), but the typological lexicon is largely overlapping, and the two systems can dialogue profitably.

Méthode Marsman and postural biomechanics

The Méthode Marsman by Pieter Marsman (manual medicine, biokinematics) has developed a system of dynamic postural analysis that integrates:

Pelvis-shoulder girdle axis as the primary axis of motor coordination
Ascending and descending muscle chains as compensation patterns
Ophthalmological reading (Marsman eye tests) as an indicator of global postural lateralization

Marsman's works documented in the "Revue de médecine manuelle" (methodological article) and the updates Biocinématique 2018 and Ophtalm 2009 provide PMA with the biomechanical basis of postural reading: how posture is not simply "aesthetic appearance" but an integrated neuromuscular expression of autonomic and psychic states. Marsman particularly documents how the pillar leg (the weight-bearing leg in neutral standing) is a reliable marker of cerebral lateralization, directly integrable into PMA diagnostics.

Joseph Messinger and the coded lexicon of gestures

The work of Joseph Messinger, author of numerous popular volumes on non-verbal communication — including Le langage des gestes pour les nuls, La grammaire des gestes, Ces gestes qui parlent à votre place — has systematized a coded gestural lexicon of over 1500 micro-gestures with their typical reading in the French relational context. Messinger is not an academic author but an experienced popularizer who has encyclopedically collected observations from the French semiological tradition (Birdwhistell, Cosnier, Calbris) applied to everyday relational practice.

For the School's PMA, Messinger provides a reference dictionary — not as the ultimate interpretive authority (PMA maintains its own original grid cross-referenced with polyvagal, lateralization, and alchemical typology) but as a descriptive catalog useful in training the student to recognize the gestural particular.

Lateral preferences (Coren)

The classic work by Stanley Coren and Clare Porac Lateral Preferences and Human Behavior (Springer, 1981) — cited in section V of this page — remains the reference manual for PMA's lateral diagnostics. Coren systematically documents the statistical distribution of lateral preferences in the population, their correlations with personality, cognitive performance, health, and the cross-cultural stability of patterns. Coren's statistical data is the epidemiological basis on which PMA builds its eightfold typology.

The somatic traditions of the 20th century

On the side of body practice, PMA also dialogues with three 20th-century traditions that have worked on body-mind-posture integration:

Ida Rolf and structural integration (Rolfing, 1950s-1970s) — systematized work on the "vertical line of the body in gravity", a concept of great relevance for the principle of vertical axis of Integral Presence™.
Moshe Feldenkrais and Awareness Through Movement — worked on the reorganization of functional laterality and body schema, providing practical tools complementary to PMA diagnostics.
David Berceli and TRE (Trauma Releasing Exercises) — codified in the early 2000s a sequence of postures that trigger spontaneous neurogenic tremor, a phenomenology that mirrors that of the mesmeric crisis and the bicycle exercise of Reich. TRE is discussed in detail in the page Movimento autonomo della crisi.

Spiegel HIP (Hypnotic Induction Profile)

The work of Herbert Spiegel and David Spiegel Trance and Treatment (1978, rev. 2004) codified the Hypnotic Induction Profile (HIP) — a brief diagnostic system (5-10 minutes) that assesses hypnotizability through simple indicators: the "roll eye sign" (the way the eyes roll upward), arm sensitivity, and readiness for suspension. Spiegel distinguished three main profiles — Apollonian, Odyssean, Dionysian — which correspond to lateral-typological configurations compatible with the PMA grid.

For the School operator, the Spiegel HIP is a rapid screening tool that integrates well with PMA diagnostics: where PMA reads the prevalent type through lateralization and gesture, Spiegel reads hypnotic availability through ocular and kinesthetic indicators.

XII. PMA in the framework of the magnetic tradition and contemporary science

The Paret Movement Analysis is the contemporary reframing of an ancient discipline. The European magnetic tradition — from Mesmer through Puységur, Lafontaine, Donato, Caravelli, Di Pisa — has always practiced a reading of the body that today PMA explicitly codifies. Paret's novelty is the systematic integration of this reading with:

Polyvagal theory by Porges (1994 and onwards) as a physiological grammar
contemporary research on touch (Field, Feldman, Hertenstein, Meaney) as a neurobiological foundation
cerebral lateralization (Bakan, Galin, Luria) as a diagnostic grid
the Myers-Briggs Type Indicator and the enneagram as converging typologies
the alchemical Tria Prima (Paracelso, Oswald Wirth) as a trans-traditional historical root

This integration is one of the epistemological signatures of the Paret Method: not a reduction of one level to another, but recognition of the convergence between independent vocabularies that describe real phenomena of human behavior. The page The Moving Enneagram of Paret presents the complete typological synthesis that results, and the page I sei tipi caratteriali nella mappa polivagale the same typology read in the polyvagal-Paracelsian vocabulary.

Sources

School publications

Marco Paret, Paret Movement Analysis (didactic presentation, ISI-CNV materials).
Marco Paret, Hypnosis, Polyvagal Theory, and Somatic Liberation (Springer chapter, in preparation).
Marco Paret, Le Flux Magnétique et les Savoirs Anciens (2017).

Cerebral lateralization

P. Bakan, «The eyes have it», Psychology Today, 4(11), 1971.
P. Bakan, «The Right Brain Is the Dreamer», Psychology Today, 1976.
D. Galin, «Implications for psychiatry of left and right cerebral specialization», Archives of General Psychiatry, 31, 1974.
A. R. Luria, Higher Cortical Functions in Man (1966/1980); The Working Brain (1973).
P. Flor-Henry, «Lateralized temporal–limbic dysfunction and psychopathology», Annals of the New York Academy of Sciences, 280, 1976.
I. McGilchrist, The Master and His Emissary: The Divided Brain and the Making of the Western World, Yale University Press, 2009.
I. McGilchrist, The Matter With Things: Our Brains, Our Delusions, and the Unmaking of the World, 2 vol., Perspectiva Press, 2021.

Embodied cognition and mirror neurons

A. Damasio, Descartes' Error: Emotion, Reason, and the Human Brain, Putnam, 1994.
A. Damasio, The Feeling of What Happens, Harcourt, 1999.
A. Damasio, Self Comes to Mind, Pantheon, 2010.
V. Gallese, «The "shared manifold" hypothesis», Journal of Consciousness Studies, 8, 2001.
G. Rizzolatti, C. Sinigaglia, Mirrors in the Brain: How Our Minds Share Actions and Emotions, Oxford University Press, 2008.
G. Lakoff, M. Johnson, Philosophy in the Flesh, Basic Books, 1999.

Touch and non-verbal communication

M. J. Hertenstein, D. Keltner, B. App, B. A. Bulleit, A. R. Jaskolka, «Touch communicates distinct emotions», Emotion, 6(3), 2006.
T. Field, Touch, MIT Press, 2014.
R. Feldman, «Parent–infant synchrony and the construction of shared timing», Journal of Child Psychology and Psychiatry, 48(3-4), 2007.
M. Mahmoud, T. Baltrušaitis, P. Robinson, L. Riek, «3D corpus of spontaneous complex mental states» (hand-over-face), ACII 2011.
F. McGlone, J. Wessberg, H. Olausson, «Discriminative and affective touch», Neuron, 82(4), 2014.
S. C. Walker et al., «C-tactile afferents: Cutaneous mediators of oxytocin release», Neuropeptides, 64, 2017.

Somatic trauma and defensive completion

P. A. Levine, Waking the Tiger: Healing Trauma, North Atlantic Books, 1997.
P. A. Levine, In an Unspoken Voice, North Atlantic Books, 2010.
B. van der Kolk, The Body Keeps the Score, Viking, 2014.
A. N. Schore, Affect Regulation and the Origin of the Self, Erlbaum, 1994.
A. N. Schore, Right Brain Psychotherapy, Norton, 2019.
D. Berceli, The Revolutionary Trauma Release Process, Namaste Publishing, 2008.

Action Types and motor preferences

R. Hippolyte, B. During, Action Types: La science des préférences motrices, Éditions Amphora, 2009.
B. Marquet, À chacun son cerveau, sa réussite, Le Cherche Midi, 2013.
L. Lussiana, Préférences motrices et performance sportive (doctoral thesis), Université de Franche-Comté, 2016.
INSEP documentation (Institut National du Sport, de l'Expertise et de la Performance), Paris, various years.

Posturology and clinical biomechanics

P. Marsman et al., «La méthode Marsman», Revue de médecine manuelle, 2017.
P. Marsman, Biocinématique (internal manual), 2018.
P. Marsman, Ophtalmologie posturale, 2009.
J. Messinger, Le langage des gestes pour les nuls, First Éditions, 2008.
J. Messinger, La grammaire des gestes, Flammarion, 2006.
J. Messinger, Ces gestes qui parlent à votre place, First Éditions, 2010.
S. Coren, C. Porac, Lateral Preferences and Human Behavior, Springer, 1981.

20th-century somatic traditions

I. P. Rolf, Rolfing: The Integration of Human Structures, Harper & Row, 1977.
M. Feldenkrais, Awareness Through Movement, Harper & Row, 1972.
M. Feldenkrais, The Potent Self, Harper & Row, 1985.

Hypnosis and induction

H. Spiegel, D. Spiegel, Trance and Treatment: Clinical Uses of Hypnosis, American Psychiatric Press, 1978/2004.
M. H. Erickson, E. L. Rossi, Hypnotic Realities, Irvington, 1976.

Yoga and polyvagal theory

M. B. Sullivan, M. Erb, L. Schmalzl, S. Moonaz, J. N. Taylor, S. W. Porges, «Yoga therapy and polyvagal theory: The convergence of traditional wisdom and contemporary neuroscience for self-regulation and resilience», Frontiers in Human Neuroscience, 12:67, 2018 (PMC5835127).

Polyvagal theory and neurophysiology

S. W. Porges, The Polyvagal Theory, Norton, 2011.
M. A. Zmijewski, A. T. Slominski, «Neuroendocrinology of the skin», Endocrine Reviews, 2011.

Typologies

I. Briggs Myers, Gifts Differing: Understanding Personality Type, Davies-Black, 1980.
C. G. Jung, Psychologische Typen, 1921.
Oswald Wirth, Le Symbolisme hermétique, Dervy, 1909.
Paracelso, Opus Paramirum.