Touch increases autonomic coupling between romantic partners

Interpersonal touch is of paramount importance in human social bonding and close relationships, allowing a unique channel for affect communication. So far the effect of touch on human physiology has been studied at an individual level. The present study aims at extending the study of affective touch from isolated individuals to truly interacting dyads. We have designed an ecological paradigm where romantic partners interact only via touch and we manipulate their empathic states. Simultaneously, we collected their autonomic activity (skin conductance, pulse, respiration). Fourteen couples participated to the experiment. We found that interpersonal touch increased coupling of electrodermal activity between the interacting partners, regardless the intensity and valence of the emotion felt. In addition, physical touch induced strong and reliable changes in physiological states within individuals. These results support an instrumental role of interpersonal touch for affective support in close relationships. Furthermore, they suggest that touch alone allows the emergence of a somatovisceral resonance between interacting individuals, which in turn is likely to form the prerequisites for emotional contagion and empathy.

[1]  R. Malmo,et al.  Physiological Study of Personal Interaction , 1956, The American journal of psychiatry.

[2]  A. Dimascio,et al.  Physiological Correlates of Tension and Antagonism During Psychotherapy: A Study of "Interpersonal Physiology" , 1957, Psychosomatic medicine.

[3]  M. Knapp,et al.  Nonverbal communication in human interaction , 1972 .

[4]  P. Venables,et al.  Publication recommendations for electrodermal measurements. , 1981 .

[5]  J. Gottman,et al.  Marital interaction: physiological linkage and affective exchange. , 1983, Journal of personality and social psychology.

[6]  R. Levenson,et al.  Empathy: a physiological substrate. , 1992, Journal of personality and social psychology.

[7]  A. Malliani,et al.  Heart rate variability. Standards of measurement, physiological interpretation, and clinical use , 1996 .

[8]  G. Breithardt,et al.  Heart rate variability: standards of measurement, physiological interpretation and clinical use. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. , 1996 .

[9]  C. Dolto-Tolitch.  Pre- and postnatal Haptonomic communication, affective security and development , 1997 .

[10]  Albert Mehrabian,et al.  Relations among personality scales of aggression, violence, and empathy: Validational evidence bearing on the risk of eruptive violence scale , 1997 .

[11]  T. Field,et al.  Massage therapy effects. , 1998, The American psychologist.

[12]  Y. Lamarre,et al.  Unmyelinated tactile afferents signal touch and project to insular cortex , 2002, Nature Neuroscience.

[13]  S. Preston,et al.  Empathy: Its ultimate and proximate bases. , 2001, The Behavioral and brain sciences.

[14]  K. Light,et al.  Warm Partner Contact Is Related to Lower Cardiovascular Reactivity , 2003, Behavioral medicine.

[15]  S. Baron-Cohen,et al.  Measuring empathy: reliability and validity of the Empathy Quotient , 2004, Psychological Medicine.

[16]  K. Light,et al.  More frequent partner hugs and higher oxytocin levels are linked to lower blood pressure and heart rate in premenopausal women , 2005, Biological Psychology.

[17]  Daniel Favre,et al.  Empathie, contagion émotionnelle et coupure par rapport aux émotions , 2005 .

[18]  Allan Kardec Barros,et al.  Assessment of pulse rate variability by the method of pulse frequency demodulation , 2005 .

[19]  S-J Blakemore,et al.  Somatosensory activations during the observation of touch and a case of vision-touch synaesthesia. , 2005, Brain : a journal of neurology.

[20]  J. Decety,et al.  A Social-Neuroscience Perspective on Empathy , 2006 .

[21]  Peter A. Bandettini,et al.  Separating respiratory-variation-related fluctuations from neuronal-activity-related fluctuations in fMRI , 2006, NeuroImage.

[22]  Richard J. Davidson,et al.  PSYCHOLOGICAL SCIENCE Research Article Lending a Hand Social Regulation of the Neural Response to Threat , 2022 .

[23]  D. Keltner,et al.  Touch communicates distinct emotions. , 2006, Emotion.

[24]  T. Singer,et al.  The empathic brain: how, when and why? , 2006, Trends in Cognitive Sciences.

[25]  C. Keysers,et al.  Integrating simulation and theory of mind: from self to social cognition , 2007, Trends in Cognitive Sciences.

[26]  J. Ward,et al.  Mirror-touch synesthesia is linked with empathy , 2007, Nature Neuroscience.

[27]  J. Holt-Lunstad,et al.  Influence of a “Warm Touch” Support Enhancement Intervention Among Married Couples on Ambulatory Blood Pressure, Oxytocin, Alpha Amylase, and Cortisol , 2008, Psychosomatic medicine.

[28]  J. Kelso,et al.  Social coordination dynamics: Measuring human bonding , 2008, Social neuroscience.

[29]  Kewei Chen,et al.  Neural correlates of heart rate variability during emotion , 2009, NeuroImage.

[30]  J. Wessberg,et al.  Coding of pleasant touch by unmyelinated afferents in humans , 2009, Nature Neuroscience.

[31]  D. Favre,et al.  Empathie, contagion émotionnelle et coupure par rapport aux émotions : validation d’un test pour repérer et aider des élèves à risque , 2009 .

[32]  D. Keltner,et al.  The communication of emotion via touch. , 2009, Emotion.

[33]  H. Olausson,et al.  The skin as a social organ , 2010, Experimental Brain Research.

[34]  L. Schilbach.  A second-person approach to other minds , 2010, Nature Reviews Neuroscience.

[35]  C. Spence,et al.  The science of interpersonal touch: An overview , 2010, Neuroscience & Biobehavioral Reviews.

[36]  Robin I. M. Dunbar.  The social role of touch in humans and primates: Behavioural function and neurobiological mechanisms , 2010, Neuroscience & Biobehavioral Reviews.

[37]  J. Wessberg,et al.  The neurophysiology of unmyelinated tactile afferents , 2010, Neuroscience & Biobehavioral Reviews.

[38]  R. Adolphs.  Conceptual Challenges and Directions for Social Neuroscience , 2010, Neuron.

[39]  F. Cincotti,et al.  Neuroelectrical Hyperscanning Measures Simultaneous Brain Activity in Humans , 2010, Brain Topography.

[40]  U. Lindenberger,et al.  Cardiac and Respiratory Patterns Synchronize between Persons during Choir Singing , 2011, PloS one.

[41]  J. Holt-Lunstad,et al.  The influence of depressive symptomatology and perceived stress on plasma and salivary oxytocin before, during and after a support enhancement intervention , 2011, Psychoneuroendocrinology.

[42]  Malin Björnsdotter,et al.  Vicarious Responses to Social Touch in Posterior Insular Cortex Are Tuned to Pleasant Caressing Speeds , 2011, The Journal of Neuroscience.

[43]  J. Hampton,et al.  The effect of relationship status on communicating emotions through touch , 2011, Cognition & emotion.

[44]  Joseph A. Bulbulia,et al.  Synchronized arousal between performers and related spectators in a fire-walking ritual , 2011, Proceedings of the National Academy of Sciences.

[45]  Eugene S. Edgington,et al.  Randomization Tests , 2011, International Encyclopedia of Statistical Science.

[46]  G. Ben-Shakhar,et al.  Publication recommendations for electrodermal measurements. , 1981, Psychophysiology.

[47]  Chaozhe Zhu,et al.  Neural Synchronization during Face-to-Face Communication , 2012, The Journal of Neuroscience.

[48]  Ian B Hickie,et al.  Heart rate variability is associated with emotion recognition: direct evidence for a relationship between the autonomic nervous system and social cognition. , 2012, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

[49]  J. Michael,et al.  Gestural coupling and social cognition: Möbius Syndrome as a case study , 2012, Front. Hum. Neurosci..

[50]  Guillaume A. Rousselet,et al.  Improving standards in brain-behavior correlation analyses , 2012, Front. Hum. Neurosci..

[51]  S. Shimojo,et al.  Interpersonal body and neural synchronization as a marker of implicit social interaction , 2012, Scientific Reports.

[52]  K. Pelphrey,et al.  Autistic traits are associated with diminished neural response to affective touch. , 2013, Social cognitive and affective neuroscience.

[53]  Christian Jutten,et al.  Non-local mind from the perspective of social cognition , 2012, Front. Hum. Neurosci..

[54]  J. Vagedes,et al.  How accurate is pulse rate variability as an estimate of heart rate variability? A review on studies comparing photoplethysmographic technology with an electrocardiogram. , 2013, International journal of cardiology.