Abstract
Humans are highly social animals that show a wide variety of verbal and non-verbal behaviours to communicate social intent. One of the most frequently used non-verbal social behaviours is embracing, commonly used as an expression of love and affection. However, it can also occur in a large variety of social situations entailing negative (fear or sadness) or neutral emotionality (formal greetings). Embracing is also experienced from birth onwards in mother–infant interactions and is thus accompanying human social interaction across the whole lifespan. Despite the importance of embraces for human social interactions, their underlying neurophysiology is unknown. Here, we demonstrated in a well-powered sample of more than 2500 adults that humans show a significant rightward bias during embracing. Additionally, we showed that this general motor preference is strongly modulated by emotional contexts: the induction of positive or negative affect shifted the rightward bias significantly to the left, indicating a stronger involvement of right-hemispheric neural networks during emotional embraces. In a second laboratory study, we were able to replicate both of these findings and furthermore demonstrated that the motor preferences during embracing correlate with handedness. Our studies therefore not only show that embracing is controlled by an interaction of motor and affective networks, they also demonstrate that emotional factors seem to activate right-hemispheric systems in valence-invariant ways.
Similar content being viewed by others
References
Adolphs, R., Damasio, H., Tranel, D., & Damasio, A. R. (1996). Cortical systems for the recognition of emotion in facial expressions. Journal of neuroscience, 16(23), 7678–7687.
Ahern, G. L., & Schwartz, G. E. (1979). Differential lateralization for positive versus negative emotion. Neuropsychologia, 17(6), 693–698.
Andersen, P. A., & Leibowitz, K. (1978). The development and nature of the construct touch avoidance. Journal of Nonverbal Behavior, 3(2), 89–106.
Boeving, E. R., Belnap, S. C., & Nelson, E. L. (2017). Embraces are lateralized in spider monkeys (Ateles fusciceps rufiventris). American Journal of primatology, 79(6). https://doi.org/10.1002/ajp.22654.
Borod, J. C. (1993). Cerebral mechanisms underlying facial, prosodic, and lexical emotional expression: A review of neuropsychological studies and methodological issues. Neuropsychology, 7(4), 445.
Buchanan, T. W., Lutz, K., Mirzazade, S., Specht, K., Shah, N. J., Zilles, K., & Jäncke, L. (2000). Recognition of emotional prosody and verbal components of spoken language: An fMRI study. Cognitive Brain Research, 9(3), 227–238.
Chapelain, A., Pimbert, P., Aube, L., Perrocheau, O., Debunne, G., Bellido, A., & Blois-Heulin, C. (2015). Can population-level laterality stem from social pressures? Evidence from cheek kissing in humans. PLoS One, 10(8), e0124477.
Churches, O., Callahan, R., Michalski, D., Brewer, N., Turner, E., Keage, H. A. D., Nicholls, M. E. R. (2012). How academics face the world: A study of 5829 homepage pictures. PLoS One, 7(7), e38940.
Corballis, M. C. (2014). Left brain, right brain: Facts and fantasies. PLoS Biology, 12(1), e1001767.
Davidson, R. J., & Fox, N. A. (1982). Asymmetrical brain activity discriminates between positive and negative affective stimuli in human infants. Science, 218(4578), 1235–1237.
Demaree, H. A., Everhart, D. E., Youngstrom, E. A., & Harrison, D. W. (2005). Brain lateralization of emotional processing: Historical roots and a future incorporating “dominance”. Behavioral and Cognitive Neuroscience Reviews, 4(1), 3–20.
Dolcos, F., LaBar, K. S., & Cabeza, R. (2004). Dissociable effects of arousal and valence on prefrontal activity indexing emotional evaluation and subsequent memory: An event-related fMRI study. Neuroimage, 23(1), 64–74.
Ekeberg, Ø, Seeberg, I., & Ellertsen, B. B. (1989). The prevalence of flight anxiety in Norway. Nordisk Psykiatrisk Tidsskrift, 43(5), 443–448.
Elias, L. J., Bryden, M. P., & Bulman-Fleming, M. B. (1998). Footedness is a better predictor than is handedness of emotional lateralization. Neuropsychologia, 36(1), 37–43.
Fernández-Carriba, S., Loeches, Á, Morcillo, A., & Hopkins, W. D. (2002). Asymmetry in facial expression of emotions by chimpanzees. Neuropsychologia, 40(9), 1523–1533.
Forsell, L. M., & Åström, J. A. (2012). Meanings of hugging: From greeting behavior to touching implications. Comprehensive Psychology, 1, 02–17.
Friederici, A. D. (2011). The brain basis of language processing: From structure to function. Physiological Reviews, 91(4), 1357–1392.
Güntürkün, O. (2003). Human behaviour: Adult persistence of head-turning asymmetry. Nature, 421(6924), 711–711.
Haggard, M. P., & Parkinson, A. M. (1971). Stimulus and task factors as determinants of ear advantages. The Quarterly Journal of Experimental Psychology, 23(2), 168–177.
Harms, V., Reese, M., & Elias, L. J. (2014). Lateral bias in theatre-seat choice. Laterality Asymmetries of Body Brain and Cognition, 19(1), 1–11.
Harms, V. L., Poon, L. J., Smith, A. K., & Elias, L. J. (2015). Take your seats: Leftward asymmetry in classroom seating choice. Frontiers in Human Neuroscience, 9:457.
Institut für Demoskopie Allensbach. (2003). IfD-Umfrage 7043. 27.02.2012.
Karenina, K., Giljov, A., Ingram, J., Rowntree, V. J., & Malashichev, Y. (2017). Lateralization of mother–infant interactions in a diverse range of mammal species. Nature Ecology and Evolution, 1, 0030.
Kestenbaum, R., & Nelson, C. A. (1992). Neural and behavioral correlates of emotion recognition in children and adults. Journal of Experimental Child Psychology, 54(1), 1–18.
Landis, T., Assal, G., & Perret, E. (1979). Opposite cerebral hemispheric superiorities for visual associative processing of emotional facial expressions and objects. Nature, 278(5706), 739–740.
Laurian, S., Bader, M., Lanares, J., & Oros, L. (1991). Topography of event-related potentials elicited by visual emotional stimuli. International Journal of Psychophysiology, 10(3), 231–238.
Ley, R. G., & Bryden, M. P. (1979). Hemispheric differences in processing emotions and faces. Brain and Language, 7(1), 127–138.
Major, B. (1981). Gender patterns in touching behavior. In C. Mayo & N. M. Henley (Eds.), Gender and nonverbal behavior (pp. 15–38). New York: Springer.
Ocklenburg, S., Beste, C., & Güntürkün, O. (2013). Handedness: A neurogenetic shift of perspective. Neuroscience and Biobehavioral Reviews, 37(10), 2788–2793.
Ocklenburg, S., & Güntürkün, O. (2009). Head-turning asymmetries during kissing and their association with lateral preference. Laterality, 14(1), 79–85.
Ocklenburg, S., & Güntürkün, O. (2017). The lateralized brain: The neuroscience and evolution of hemispheric asymmetries. London: Academic Press.
Oldfield, R. C. (1971). The assessment and analysis of handedness: The Edinburgh inventory. Neuropsychologia, 9(1), 97–113.
Prete, G., Laeng, B., Fabri, M., Foschi, N., & Tommasi, L. (2015). Right hemisphere or valence hypothesis, or both? The processing of hybrid faces in the intact and callosotomized brain. Neuropsychologia, 68, 94–106.
Rabinowitz, F. E. (1991). The male-to-male embrace: Breaking the touch taboo in a men’s therapy group. Journal of Counseling and Development, 69(6), 574–576.
Reiss, M., & Reiss, G. (1997). Ocular dominance: Some family data. Laterality Asymmetries of Body Brain and Cognition, 2(1), 7–16.
Sato, W., Kochiyama, T., Yoshikawa, S., Naito, E., & Matsumura, M. (2004). Enhanced neural activity in response to dynamic facial expressions of emotion: An fMRI study. Cognitive Brain Research, 20(1), 81–91.
Sedgewick, J. R., & Elias, L. J. (2016). Family matters: Directionality of turning bias while kissing is modulated by context. Laterality Asymmetries of Body Brain and Cognition, 21(4–6), 662–671.
Silberman, E. K., & Weingartner, H. (1986). Hemispheric lateralization of functions related to emotion. Brain and Cognition, 5(3), 322–353.
Siniscalchi, M., Sasso, R., Pepe, A. M., Vallortigara, G., & Quaranta, A. (2010). Dogs turn left to emotional stimuli. Behavioural Brain Research, 208(2), 516–521.
Suberi, M., & McKeever, W. F. (1977). Differential right hemispheric memory storage of emotional and non-emotional faces. Neuropsychologia, 15(6), 757–768.
Turnbull, O. H., Stein, L., & Lucas, M. D. (1995). Lateral preferences in adult embracing: A test of the “hemispheric asymmetry” theory of infant cradling. The Journal of Genetic Psychology, 156(1), 17–21.
Van Gerwen, L. J., & Diekstra, R. F. (2000). Fear of flying treatment programs for passengers: An international review. Aviation Space and Environmental Medicine, 71(4), 430–437.
Van Gerwen, L. J., Spinhoven, P., Diekstra, R. F., & Van Dyck, R. (1997). People who seek help for fear of flying: Typology of flying phobics. Behavior Therapy, 28(2), 237–251.
Acknowledgements
Julian Packheiser was supported by the German Research Foundation (DFG) through the Research Training Group “Situated Cognition” (GRK 2185/1). Additionally, we would like to thank John Tuff and Catrona Anderson for translating the cover stories from German to English. We also want to thank Judith Schmitz for proof-reading the manuscript. Finally, we would like to thank the reviewers for their helpful suggestions.
Author information
Authors and Affiliations
Contributions
JP and NR analysed the data, wrote the manuscript and supervised the experiments. SO conceived the experiment, analysed the data, supervised the experiments and reviewed the manuscript. OG reviewed the manuscript and provided the laboratory setting to perform the experiments. ZD, JM and AW performed the data acquisition.
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interests.
Data access
We have full access to our data and allow the journal to review the data if requested.
Ethical approval
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Packheiser, J., Rook, N., Dursun, Z. et al. Embracing your emotions: affective state impacts lateralisation of human embraces. Psychological Research 83, 26–36 (2019). https://doi.org/10.1007/s00426-018-0985-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00426-018-0985-8