Touch e sistema nervoso autonomo/en

Touch and the Autonomic Nervous System presents the contemporary neurobiological dossier on touch as a communicative channel, autonomic regulator, and foundation of human development, organized according to its use by the Paret Method in its didactic and clinical practice and in Paret Movement Analysis. The entry documents how the European magnetic tradition — which made touch and passes the central instrument of its work for over two centuries — today receives precise scientific validation and a shared physiological grammar with contemporary mindfulness, neonatology, somatic psychotherapy, and polyvagal theory.

The entry does not replace the operational vocabulary of Mesmerism nor reduce magnetism to physiology: it offers a contemporary translation that allows the magnetic practice of the School to enter into dialogue with science without dissolving its initiatory and technical dimension.

I. Touch and Oxytocin

One of the most solid discoveries of contemporary neurobiology of touch is the link between affectionate touch and the release of oxytocin (OT) — a neuropeptide that produces feelings of warmth, intimacy, trust, and bonding. Research has documented this connection with great precision.

Pioneering studies by Meaney and colleagues (Francis, Champagne & Meaney, 2000) demonstrated that natural variations in maternal licking and grooming in rats — the typical maternal touch in mammals — were associated with systematic differences in brain OT levels and OT receptor density in brain areas central to the expression of parental behavior: the paraventricular nucleus of the hypothalamus, the lateral septum, and the bed nucleus of the stria terminalis.

In human studies by Feldman and colleagues (2007, 2010), a high level of maternal affectionate touch (over 67% of interaction time) was associated with an increase in OT after play; low maternal touch was not. In studies by Holt-Lunstad et al. (2008), a "warm touch" intervention among married couples produced a reduction in ambulatory blood pressure, an increase in OT, and a reduction in cortisol and salivary alpha-amylase. The data is bilateral: not only does the person receiving touch benefit, but so does the person touching, because stimulation of pressure receptors in the hands activates the same regulatory pathways.

For the School of the Paret Method, this observation is central: in magnetic practice and in Mesmerismus, the magnetizer is not external to the field they create — they receive regulation precisely from the act of transmitting, in a process that tradition describes as "the magnetizer self-magnetizes in the act of magnetizing."

II. Touch and the Vagus Nerve: The Vagal Brake

The link between touch and autonomic regulation is crucially mediated by the vagus nerve, and in particular by its ventral branch described by Stephen Porges's Polyvagal Theory. Respiratory sinus arrhythmia (RSA) or cardiac vagal tone measures the respiratory component of heart rate variability and is considered a biomarker of the regulatory capacity of the parasympathetic system.

A high basal vagal tone is associated with better regulatory capacities and more optimal social engagement.
The vagal brake — the degree of variation in vagal tone in response to stressful situations — indicates the system's ability to mobilize sufficient energy to respond to the environmental challenge while maintaining regulation.

Research by Feldman & Eidelman (2007) showed that the infant's vagal tone in the neonatal period predicts maternal and paternal affectionate touch at 3 months and affect synchrony — the infant regulates the adult as much as the adult regulates the infant. In the Still-Face experiment, maternal touch during the Still-Face episode reduces the magnitude of the vagal tone change and accelerates the autonomic return to baseline.

In Diego, Field & Hernandez-Reif (2007), moderate-pressure massage produces a significant increase in vagal activity immediately and across repeated sessions, while light massage does not produce this effect. The effect is mediated by pressure receptors innervated by vagal afferent fibers that project to the nucleus of the solitary tract and from there to the nucleus ambiguus and the dorsal motor nucleus of the vagus — the anatomical basis of the vagal release reflex.

For the practice of the Paret Method, this means that the magnetic touch of tradition — Mesmer's passes, the laying on of hands, the nuchal-sacral contact described in Magnetic Alignment — is neither metaphor nor placebo: it activates a documented physiological mechanism, the vagal release reflex, which produces in a few seconds (3-7 seconds in clinical experience) a reduction in heart rate, deepening of breath, and reduction of segmental muscle tone.

III. C-Tactile Fibers and Affectionate Touch

A neurobiological discovery of the last two decades, particularly relevant for the magnetic practice of the School, has identified a specific and dedicated neural pathway for affectionate touch — distinct from the classical pathway of discriminative touch. Research by Francis McGlone, Håkan Olausson, India Morrison and collaborators (Liverpool John Moores University, Karolinska Institute) has documented the existence of a class of afferent fibers called C-tactile afferents (CT) or C-LTMR (unmyelinated C-fiber low-threshold mechanoreceptors), which constitute the specific neuronal substrate of affectionate interpersonal touch.

Characteristics of C-Tactile Fibers

Unlike the Aβ fibers of discriminative touch (fast, myelinated, dedicated to precise localization and shape recognition), C-tactile fibers are:

Unmyelinated, slow-conducting (about 1 m/s compared to 60-80 m/s for Aβ)
Present only in hairy skin of the body (arms, back, face) — absent in the palms of the hands and soles of the feet
Selectively sensitive to stroking speeds between 1 and 10 cm/s, with peak activation at 3 cm/s
Selectively sensitive to skin-temperature touch (32°C, the natural temperature of a gently touching human hand)
Project primarily to the posterior insular cortex (not the primary somatosensory cortex), an area associated with interoception, emotional body awareness, and affective regulation

The optimal speed of 3 cm/s corresponds precisely to the natural speed of a human caress — the one a mother gives to a newborn, the one lovers exchange, the one the magnetizer uses in passes.

Operational Implications for the Paret Method

Research by Susannah Walker and collaborators (Walker et al., "C-tactile afferents: Cutaneous mediators of oxytocin release during affiliative tactile interactions?", Neuropeptides 2017) has shown that activation of C-tactile fibers is correlated with oxytocin release — providing the specific neuronal substrate for the mechanism described in §I of this page. The operational translation is precise:

Magnetic touch works when it respects the optimal speed and temperature of C-tactile fibers — 3 cm/s, 32°C, hairy skin.
Fast instrumental touch (Aβ-dominant) does not produce the same oxytocin release or insular activation.
Magnetic passes of Mesmer and subsequent tradition, performed slowly and rhythmically on bare or thinly covered skin, selectively activate the C-tactile system.
Magnetic Alignment nuchal-sacral uses both hands in prolonged, light static contact on CT-dense areas (hairy nape) and autonomically significant areas (sacrum) — combining CT activation with ventral vagal co-regulation.

Research by Loken et al. (2009, "Coding of pleasant touch by unmyelinated afferents in humans", Nature Neuroscience), Morrison (2016, "Keep calm and cuddle on: social touch as a stress buffer"), and Croy et al. (2016, "Affective touch awareness in mental health") has confirmed that activation of C-tactile fibers significantly reduces stress reactivity and improves emotional regulation, with measurable effects in patients with affective and anxiety disorders.

Early Development of C-Tactile Fibers

Research by Tiffany Field cited in §I, integrated with discoveries about C-tactile fibers, shows that the CT system develops early and participates in mother-infant bonding. Maternal affectionate touch — described as "affectionate touch" in Feldman's research — is a selective activator of the CT system, which in turn contributes to the maturation of the insula-cingulate cortex axis essential for affective regulation in adulthood. The page The Six Character Types in the Polyvagal Map describes how early touch deficits produce specific character types (particularly the dorsal-conservative Salt type) — CT research provides the micro-anatomical basis for this clinical observation.

IV. The Skin as a Peripheral Neuroendocrine Axis

A more recent discovery, not yet fully integrated into neurophysiology textbooks, is that the skin constitutes a peripheral equivalent of the hypothalamic-pituitary-adrenal axis (HPA). The work of Zmijewski & Slominski (2011) and their collaborators has documented that the cutaneous neuroendocrine system:

Produces corticotropin-releasing hormone (CRH) and downstream pro-opiomelanocortin peptides, including endorphins
Produces steroids (androgens, estrogens) and secosteroids (vitamin D3 through UVB cleavage of 7-dehydrocholesterol)
Produces serotonin (with pro-inflammatory, vasodilatory, pro-pruritogenic effects) and melatonin
Expresses an equivalent of the hypothalamic-pituitary-thyroid axis (Gáspár et al. 2009; Slominski, Wortsman, Tuckey & Paus 2007)

In other words, the skin is a primary neuroendocrine organ that functions as a bidirectional platform for signal exchange with other peripheral organs, the endocrine and immune systems, and the brain, allowing rapid and selective responses to the environment to maintain local and systemic homeostasis.

This discovery provides a neurobiological foundation for the ancient intuition of the magnetic tradition: the skin is not simply a passive boundary; it is an active magnetic organ that receives, processes, and transmits regulatory information. Mesmer's "magnetic fluid" — a category obviously no longer adequate in its 18th-century formulation — phenomenologically described what we can today redescribe as a cutaneous neuroendocrine-immune dialogue between two organisms in contact.

V. Touch and Early Development

The somesthetic system (kinesthetic and cutaneous) is the first sensory system to develop in the human embryo (Maurer & Maurer 1988; Montagu 1971), and its early maturation has consequences for all subsequent development.

Prenatal Touch

Already in intrauterine life, the fetus responds to touch and vibroacoustic stimulation (Kisilevsky, Fearon & Muir 1998; Lecanuet, Granier-Deferre & Busnel 1989). From 26-28 weeks postconceptional age, motor and cardiac responses to tactile and vibrotactile stimuli are observed (Kisilevsky, Muir & Low 1992).

The study by Wang, Hua & Xu (2015) on 302 mother-infant dyads showed that regular gentle tactile stimulation during pregnancy was associated at 3 months with:

Less negative mood in the infant
Greater adaptability
Greater approach (vs. withdrawal)
Greater persistence

In other words, the infant's temperament is shaped already in the womb by the pattern of maternal touch — an observation that gives neurobiological substance to the notion, present in all initiatory and wisdom traditions, of pregnancy as a period of active formation of the new being.

Laterality of Fetal Self-Touch

Particularly interesting for PMA is the research by Reissland, Aydin, Francis & Exley (2015) on the laterality of fetal self-touch: the level of self-reported maternal stress was significantly positively correlated with fetal self-touch with the left hand. This confirms at the prenatal level the valence model of emotional lateralization (Ahern & Schwartz 1979; Davidson 1998): the right hemisphere is dominant for negative emotions and withdrawal, and left-sided fetal self-touch is controlled by the right hemisphere — the fetus already under maternal stress shows the signal of defensive activation. For the School's PMA, this is an indicator that the laterality of gesture and touch has deep prenatal and biographical roots.

Kangaroo Care and Neonatal Regulation

Studies on Kangaroo Care (KC) — prolonged skin-to-skin contact between mother and preterm infant, introduced in Bogotá in the 1970s — are among the most impressive dossiers on the regulatory power of early touch. A review 25 years after the introduction of the method (Charpak et al. 2005) showed that KC:

Reduces crying frequency
Reduces levels of beta-endorphins indicating stress
Increases quiet sleep and alert wakefulness
Improves thermoregulation and oxygenation
Functions as an analgesic during painful medical procedures
Organizes the sleep-wake cycle (effect on biological clock maturation)
At 3 months: greater threshold to negative emotionality, better arousal modulation
At 1 year: better management of separation, greater exploration
At 2 years: better executive functions (delayed-response paradigm)
At 5 and 10 years: superior performance on NEPSY (neurocognitive test of executive functions)

The long-term effect is specific: general IQ no longer distinguishes the groups at 5 and 10 years, but regulatory capacities do. Early touch shapes regulation, not general intelligence — and regulation is precisely what the Paret Method cultivates through Integral Presence™, magnetic techniques, and work on the six character types.

VI. Touch Communicates Distinct Emotions: The Hertenstein Decoder

A line of research central to PMA is that of Matthew Hertenstein and collaborators, who have experimentally demonstrated that touch can communicate distinct emotions with accuracy comparable to that of voice and face, and in some cases superior for positive emotions.

In the experimental paradigm of Hertenstein, Keltner, App, Bulleit & Jaskolka (2006), two participants unknown to each other, separated by a barrier preventing visual and auditory contact, communicated emotions through touch alone on the forearm. The results showed that eight emotions are communicable through touch at levels well above chance:

Anger
Fear
Happiness
Sadness
Disgust
Love
Gratitude
Sympathy

Decoding accuracies (50-70%) are comparable to those of face and voice. The most surprising finding is that touch shows greater differentiation of positive emotions compared to the face: the face reliably communicates only one positive emotion (joy), while touch distinguishes four (happiness, love, gratitude, sympathy).

The Operational Grid: Pattern, Zone, Intensity, Duration

For each emotion, the research identified the specific motor pattern, body zone, intensity, and duration. The School of the Paret Method has integrated this grid as an operational vocabulary for PMA:

Emotion	Motor Pattern	Body Zone	Intensity	Duration
Anger	Hit, push, squeeze	Mid or mid-upper arm	Strong	~4 sec
Fear	Shake, squeeze, tremble	Mid arm	Moderate	~7 sec
Disgust	Push	Mid arm	Moderate-strong	brief
Sadness	Contact, nuzzle	Hands (opposite sex), arm (same sex)	Low	~6 sec
Happiness	Shake, swing, lift	Arms	Moderate	~5 sec
Love	Hug, embrace	Chest	Low	~5 sec
Gratitude	Shake, lift	Arms	Moderate	~6 sec
Sympathy	Pat, rub, hug	Arms	Light	~6 sec

For the School's didactic practice, this grid is first-transmission material: the operator learns to recognize the eight emotions in observed touch and to produce them in their own touch with technical precision.

VII. Touch and Physiological Regulation in Adults

The regulatory effects of touch are not limited to infant development. The study by Weiss (1990) on hospitalized cardiovascular patients documented that a standardized 16-minute touch protocol (physical assessment procedures and massage) significantly reduced heart rate and blood pressure.

The experiment by Grewen, Anderson, Girdler & Light (2003) showed that 10 minutes of affectionate contact with a partner (touching, a short romantic film, a 20-second hug) before a stressful task (a 3-minute public speech recorded and then watched in replay) produced lower cardiovascular reactivity compared to a control group that spent the same time alone. Affectionate touch is therefore an effective autonomic pre-conditioning for facing imminent stress.

In the work on massage therapy by Tiffany Field and collaborators, massage has shown documented effects on:

Prenatal and postpartum depression
Immune function (increase in NK cells and their cytotoxicity in cancer patients, Hernandez-Reif et al. 2004, 2005)
Children with cancer (reduction in anxiety and heart rate)
Children with autism (Silva et al. 2009: increased attention, social and linguistic improvement)
HIV+ patients (preservation of CD4+ cells, increase in NK cells)
Stress, cortisol, inflammation (reduction in IL-4, IL-5, IL-10, IL-13)

The fMRI data from Ouchi et al. (2006) shows that massage increases cerebral blood flow in regions involved in the regulation of depression and stress — particularly the amygdala and hypothalamus. The unifying mechanism identified by research is the stimulation of pressure receptors that activate vagal afferent fibers, modulate autonomic tone, reduce cortisol, and influence the limbic and hypothalamic structures of emotional regulation.

VIII. Touch and Compliance, Persuasion, Proximity

Touch not only communicates emotions and regulation: it increases compliance and modifies social proximity. A vast literature documents that a brief, light, non-invasive touch on the forearm or shoulder:

Increases willingness to return lost money (Kleinke 1977)
Increases tips in restaurants (Crusco & Wetzel 1984)
Increases acceptance of suggestions (Guéguen et al. 2007)
Increases therapeutic compliance (medication adherence, Guéguen & Vion 2009)
Increases petition signing and questionnaire completion (Willis & Hamm 1980)
Increases pro-social behaviors in cooperative games (Kurzban 2001)

For the School's PMA, this data has ethical and technical implications: touch is a powerful tool that the operator must use with awareness of its effect, both in the clinical and didactic relationship and in ordinary life. The distinction between ethical touch (at the service of the person) and manipulative touch (at the service of the toucher) is one of the most delicate issues in training.

Gender and Cultural Differences

Touch is not interpreted the same way by everyone. Research by Nguyen, Heslin & Nguyen (1975, 1976), Fisher, Rytting & Heslin (1976), and Whitcher & Fisher (1979) has documented:

Women tend to perceive non-sexual touch from strangers more positively than men
Men respond less positively to touch from unfamiliar women in non-sexual contexts, sometimes with increased anxiety and blood pressure
Touch between same-sex individuals is evaluated more negatively by men than by women
Congruence between the intimacy of touch and the intimacy of the relationship is crucial, especially for women
Collectivist culture (Shuter 1976) is less tactile than individualist culture
Countries with greater sun exposure (pineal neuroendocrine pathways) are more tactile than northern countries (Andersen et al. 1990; Sampson 1975)

These data have direct application to the School's practice in multicultural contexts — Italy, France, Bulgaria, Brazil, Portugal, English-speaking countries — where the caliber of didactic touch must be culturally adapted.

IX. Touch Avoidance and Personality

An important line of research for PMA is that on touch avoidance (Andersen & Sull 1985, Andersen 2005), which has identified the Touch Avoidance Measure (TAM) and its correlations:

Gender and gender role — men are more same-sex touch avoidant, women more opposite-sex touch avoidant; highly "masculine" men (low androgyny) show the greatest same-sex touch avoidance
Age — opposite-sex touch avoidance increases with age; same-sex avoidance does not
Self-esteem — low self-esteem correlates with greater opposite-sex touch avoidance (Andersen et al. 1987)
Big Five (Dorros, Hanzal & Segrin 2008) — agreeableness and openness to experience correlate with positive perception of intimate and non-intimate touch

For PMA, identifying a touch-avoidant individual is crucial: these subjects often have hypo-ventral autonomic configurations (dorsal or dysregulated sympathetic), and traditional magnetic practice does not work directly on them — it requires preliminary preparation through non-tactile portals (visual, phonic, prosodic) before touch can be introduced.

X. The Dossier within the Framework of the Paret Method

The contemporary research on touch presented in this page is convergent with three complementary theoretical strands that the School recognizes as part of its frame of reference:

Allan Schore and regulation theory (Affect Regulation and the Origin of the Self, 1994; Right Brain Psychotherapy, 2019) — integrated the research of Feldman, Meaney, Stern and others into a coherent theory of right hemisphere development through early affective regulation mediated by maternal touch. The page McGilchrist presents the broader framework of brain lateralization in which Schore situates himself.
Daniel Stern and affect attunement (The Interpersonal World of the Infant, 1985) — described affective attunement between mother and infant as trans-modal matching between the stimulation pattern (including touch) and the child's affective state. This concept is the basis of what the School's magnetizer does when "entering phase" with the subject.
Peter Levine and somatic experiencing (Waking the Tiger, 1997; In an Unspoken Voice, 2010), and Bessel van der Kolk (The Body Keeps the Score, 2014) — described the somatic release of trauma as completion of interrupted defensive responses. This is precisely the phenomenological model of the School's Mesmeric Crisis and Autonomous Movement of the Crisis, expressed in the contemporary vocabulary of somatic psychotherapy. The sequence is also explored in the practices of Trauma Releasing Exercises by David Berceli (2005) — a technique for inducing spontaneous neurogenic tremor that takes up the phenomenology of Wilhelm Reich's bicycle exercise and places it on a standardized postural basis.
Ida Rolf and structural integration (Rolfing, 1950s-1970s) — systematized work on the vertical axis of the body in gravity, a concept directly connected to the principle of verticality in Integral Presence™ and the action of touch on the reorganization of fascial chains.
Moshe Feldenkrais and Awareness Through Movement — worked on the reorganization of the body schema and functional laterality through small, conscious movements; particularly relevant for section III of this page (C-tactile fibers and 3 cm/s speed — Feldenkrais touch operates selectively in that range).
The convergent work of Sullivan, Erb, Schmalzl, Moonaz, Taylor and Porges (Frontiers in Human Neuroscience, 2018, PMC5835127) has explicitly systematized the correspondence between yoga tradition and Polyvagal Theory — ventral vagus ↔ sattva, sympathetic ↔ rajas, dorsal vagus ↔ tamas. The page Gunas and Tria Prima presents this convergence in detail, which grounds the integration between ancient bodywork traditions and contemporary neurophysiology that the School practices.

Touch research provides the explicit neurobiological foundation for the School's practice in three operational directions:

Diagnostic — observation of touch (self-touch, observed touch in the dyad, offered touch, touch avoidance) is an integral part of Paret Movement Analysis and provides precise diagnostic indicators of the prevalent character type, autonomic state, and attachment history.
Operational — the specific techniques of the Paret Method that use touch — Mesmeric Crisis, Magnetic Alignment (hand nuchal-sacral), magnetic fascination techniques, the non-verbal use of the hand in didactics — operate through the neurobiological mechanisms documented in this page: ventral vagal activation, OT release, cortisol reduction, regulation of the peripheral cutaneous HPA axis.
Transmissive — in didactics and training, ethical, conscious, and technically precise touch is one of the central tools in the formation of the magnetizer. Knowledge of the Hertenstein decoder of the eight emotions of touch allows the student to learn to produce and recognize the touch appropriate to each moment of the relationship.

The page Autonomous Movement of the Crisis describes how magnetic touch establishes the field of relational safety that allows the spontaneous autonomic discharge — the mesmeric crisis — to complete itself in liberation rather than panic or dissociation. The page Hypnosis, Polyvagal Theory, and Somatic Liberation presents how co-regulatory touch is one of the main ingredients of ventral vagal engagement that opens the three hypnotic doors (maternal, paternal, mental).

Sources

Field Syntheses

M. J. Hertenstein, S. J. Weiss (eds.), The Handbook of Touch: Neuroscience, Behavioral, and Health Perspectives, Springer Publishing Company, 2011.
T. Field, Touch, MIT Press, 2014 (2nd ed.).
A. Montagu, Touching: The Human Significance of the Skin, Harper & Row, 1971/1986.
F. McGlone, J. Wessberg, H. Olausson, "Discriminative and affective touch: Sensing and feeling", Neuron, 82(4), 2014.

C-Tactile Fibers and Affectionate Touch

L. S. Loken, J. Wessberg, I. Morrison, F. McGlone, H. Olausson, "Coding of pleasant touch by unmyelinated afferents in humans", Nature Neuroscience, 12(5), 2009.
I. Morrison, L. S. Loken, H. Olausson, "The skin as a social organ", Experimental Brain Research, 204(3), 2010.
I. Morrison, "Keep calm and cuddle on: Social touch as a stress buffer", Adaptive Human Behavior and Physiology, 2(4), 2016.
S. C. Walker, P. D. Trotter, W. A. Swaney, A. Marshall, F. McGlone, "C-tactile afferents: Cutaneous mediators of oxytocin release during affiliative tactile interactions?", Neuropeptides, 64, 2017.
I. Croy, S. Luong, T. Triscoli, E. Hofmann, H. Olausson, U. Sailer, "Interpersonal stroking touch is targeted to C tactile afferent activation", Behavioural Brain Research, 2016.
H. Olausson, J. Wessberg, I. Morrison, F. McGlone (eds.), Affective Touch and the Neurophysiology of CT Afferents, Springer, 2016.

Touch and Oxytocin

R. Feldman, A. Weller, O. Zagoory-Sharon, A. Levine, "Evidence for a neuroendocrinological foundation of human affiliation: Plasma oxytocin levels across pregnancy and the postpartum period predict mother–infant bonding", Psychological Science, 18(11), 2007.
F. Champagne, "Epigenetic mechanisms and the transgenerational effects of maternal care", Frontiers in Neuroendocrinology, 29(3), 2008.
J. Holt-Lunstad, W. Birmingham, K. Light, "Influence of a 'warm touch' support enhancement intervention among married couples", Psychosomatic Medicine, 70, 2008.
V. E. Morhenn, J. W. Park, E. Piper, P. J. Zak, "Monetary sacrifice among strangers is mediated by endogenous oxytocin release after physical contact", Evolution and Human Behavior, 29(6), 2008.

Touch and the Vagus Nerve

S. W. Porges, The Polyvagal Theory, Norton, 2011.
M. Diego, T. Field, M. Hernandez-Reif, "Vagal activity, gastric motility, and weight gain in massaged preterm neonates", Journal of Pediatrics, 147(1), 2005.
T. Field, M. Diego, "Vagal activity, early growth and emotional development", Infant Behavior and Development, 31(3), 2008.
R. Feldman, M. Singer, O. Zagoory, "Touch attenuates infants' physiological reactivity to stress", Developmental Science, 13(2), 2010.

Skin as a Neuroendocrine Axis

M. A. Zmijewski, A. T. Slominski, "Neuroendocrinology of the skin: An overview and selective analysis", Dermato-Endocrinology, 3(1), 2011.
A. T. Slominski, J. Wortsman, R. C. Tuckey, R. Paus, "Differential expression of HPA axis homolog in the skin", Molecular and Cellular Endocrinology, 265-266, 2007.
T. Gáspár et al., "Thyrotropin-releasing hormone selectively stimulates human hair follicle pigmentation", Journal of Investigative Dermatology, 129(2), 2009.

Early Development and Kangaroo Care

N. Charpak, J. G. Ruiz-Peláez et al., "Kangaroo Mother Care: 25 years after", Acta Paediatrica, 94(5), 2005.
R. Feldman, A. Weller, L. Sirota, A. I. Eidelman, "Skin-to-skin contact accelerates autonomic and neurobehavioural maturation in preterm infants", Developmental Medicine and Child Neurology, 45(4), 2002.
N. Reissland, E. Aydin, B. Francis, K. Exley, "Laterality of foetal self-touch in relation to maternal stress", Laterality, 20(1), 2015.
Z.-W. Wang, J. Hua, Y.-H. Xu, "Relationship between gentle tactile stimulation on the fetus and its temperament 3 months after birth", Behavioural Neurology, 2015.

Regulation Theory and Right Hemisphere Development

A. N. Schore, Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development, Lawrence Erlbaum, 1994.
A. N. Schore, Affect Dysregulation and Disorders of the Self, Norton, 2003.
A. N. Schore, The Science of the Art of Psychotherapy, Norton, 2012.
A. N. Schore, Right Brain Psychotherapy, Norton, 2019.
D. N. Stern, The Interpersonal World of the Infant, Basic Books, 1985.
D. N. Stern, The Present Moment in Psychotherapy and Everyday Life, Norton, 2004.
E. Tronick, The Neurobehavioral and Social-Emotional Development of Infants and Children, Norton, 2007.

Somatic Trauma and Defensive Completion

P. A. Levine, Waking the Tiger: Healing Trauma, North Atlantic Books, 1997.
P. A. Levine, In an Unspoken Voice: How the Body Releases Trauma and Restores Goodness, North Atlantic Books, 2010.
B. van der Kolk, The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma, Viking, 2014.
P. Ogden, K. Minton, C. Pain, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, Norton, 2006.
B. Rothschild, The Body Remembers: The Psychophysiology of Trauma and Trauma Treatment, Norton, 2000.
R. Scaer, The Body Bears the Burden: Trauma, Dissociation, and Disease, Routledge, 2014 (3rd ed.).
D. Berceli, Trauma Releasing Exercises (TRE): A Revolutionary New Method for Stress