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International Journal of Social Robotics

, Volume 9, Issue 4, pp 479–490 | Cite as

Non-human Looking Robot Arms Induce Illusion of Embodiment

  • Laura Aymerich-FranchEmail author
  • Damien Petit
  • Gowrishankar Ganesh
  • Abderrahmane Kheddar
Article

Abstract

We examine whether non-human looking humanoid robot arms can be perceived as part of one’s own body. In two subsequent experiments, participants experienced high levels of embodiment of a robotic arm that had a blue end effector with no fingers (Experiment 1) and of a robotic arm that ended with a gripper (Experiment 2) when it was stroked synchronously with the real arm. Levels of embodiment were significantly higher than the corresponding asynchronous condition and similar to those reported for a human-looking arm. Additionally, we found that visuo-movement synchronization also induced embodiment of the robot arm and that embodiment was even partially maintained when the robot hand was covered with a blue plastic cover. We conclude that humans are able to experience a strong sense of embodiment towards non-human looking robot arms. The results have important implications for the domains related to robotic embodiment.

Keywords

Humanoid robot embodiment Non-human looking robot Body ownership illusion Rubber-hand illusion 

Notes

Acknowledgements

This project has received funding from the European Union with the Marie Curie IOF Fellowship project HumRobCooperation under Grant agreement No. PIOF-CT-622764. It is also partially supported from the FP7 IP VERE No. 257695 and the Kakenhi ‘houga’ Grant 15616710 from the Japan Society for the Promotion of Science (JSPS). We specially thank Prof. E. Yoshida for his support in the ethical procedures and the interns at our laboratory in Japan who collaborated for the pretest or to appear in the pictures.

Supplementary material

Supplementary material 1 (mp4 23858 KB)

References

  1. 1.
    Botvinick M, Cohen J (1998) Rubber hands “feel” touch that eyes see. Nature 391:756. doi: 10.1038/35784 CrossRefGoogle Scholar
  2. 2.
    Tsakiris M, Haggard P (2005) The rubber hand illusion revisited: visuotactile integration and self-attribution. J Exp Psychol Hum Percept Perform 31:80–91. doi: 10.1037/0096-1523.31.1.80 CrossRefGoogle Scholar
  3. 3.
    Hohwy J, Paton B (2010) Explaining away the body: experiences of supernaturally caused touch and touch on non-hand objects within the rubber hand illusion. PLoS ONE 5:e9416. doi: 10.1371/journal.pone.0009416 CrossRefGoogle Scholar
  4. 4.
    Armel KC, Ramachandran VS (2003) Projecting sensations to external objects: evidence from skin conductance response. Proc Biol Sci 270:1499–506. doi: 10.1098/rspb.2003.2364 CrossRefGoogle Scholar
  5. 5.
    Maselli A, Slater M (2013) The building blocks of the full body ownership illusion. Front Hum Neurosci 7:83. doi: 10.3389/fnhum.2013.00083 CrossRefGoogle Scholar
  6. 6.
    Holmes NP, Snijders HJ, Spence C (2006) Reaching with alien limbs: visual exposure to prosthetic hands in a mirror biases proprioception without accompanying illusions of ownership. Percept Psychophys 68:685–701. doi: 10.3758/BF03208768 CrossRefGoogle Scholar
  7. 7.
    Longo MR, Schüür F, Kammers MPM et al (2009) Self awareness and the body image. Acta Psychol (Amst) 132:166–172. doi: 10.1016/j.actpsy.2009.02.003 CrossRefGoogle Scholar
  8. 8.
    Pavani F, Zampini M (2007) The role of hand size in the fake-hand illusion paradigm. Perception 36:1547–1554. doi: 10.1068/p5853 CrossRefGoogle Scholar
  9. 9.
    Ehrsson HH, Spence C, Passingham RE (2004) That’s my hand! Activity in premotor cortex reflects feeling of ownership of a limb. Science 305:875–877. doi: 10.1126/science.1097011 CrossRefGoogle Scholar
  10. 10.
    Costantini M, Haggard P (2007) The rubber hand illusion: sensitivity and reference frame for body ownership. Conscious Cogn 16:229–240. doi: 10.1016/j.concog.2007.01.001 CrossRefGoogle Scholar
  11. 11.
    Lloyd DM (2007) Spatial limits on referred touch to an alien limb may reflect boundaries of visuo-tactile peripersonal space surrounding the hand. Brain Cogn 64:104–109. doi: 10.1016/j.bandc.2006.09.013 CrossRefGoogle Scholar
  12. 12.
    Romano D, Caffa E, Hernandez-Arieta A et al (2015) The robot hand illusion: Inducing proprioceptive drift through visuo-motor congruency. Neuropsychologia 70:414–420. doi: 10.1016/j.neuropsychologia.2014.10.033 CrossRefGoogle Scholar
  13. 13.
    Hellman RB, Chang E, Tanner J et al (2015) A robot hand testbed designed for enhancing embodiment and functional neurorehabilitation of body schema in subjects with upper limb impairment or loss. Front Hum Neurosci 9:1–10. doi: 10.3389/fnhum.2015.00026 CrossRefGoogle Scholar
  14. 14.
    Alimardani M, Nishio S, Ishiguro H (2013) Humanlike robot hands controlled by brain activity arouse illusion of ownership in operators. Sci Rep 3:2396. doi: 10.1038/srep02396 CrossRefGoogle Scholar
  15. 15.
    Aymerich-Franch L (2012) Can we identify with a block ? Identification with non-anthropomorphic avatars in virtual reality games. In: Proc. Int. Soc. Presence Res. Annu. ConfGoogle Scholar
  16. 16.
    Aymerich-Franch L (2010) Presence and emotions in playing a group game in a virtual environment: the influence of body participation. Cyberpsychol Behav Soc Netw 13:649–654. doi: 10.1089/cyber.2009.0412 CrossRefGoogle Scholar
  17. 17.
    Aymerich-Franch L, Kizilcec RF, Bailenson JN (2014) The relationship between virtual self similarity and social anxiety. Front Hum Neurosci 8:1–10. doi: 10.3389/fnhum.2014.00944 CrossRefGoogle Scholar
  18. 18.
    Aymerich-Franch L, Petit D, Ganesh G, Kheddar A (2015) Embodiment of a humanoid robot is preserved during partial and delayed control. In: 2015 IEEE Int. Work. Adv. Robot. its Soc. ImpactsGoogle Scholar
  19. 19.
    Petit D, Gergondet P, Cherubini A, Kheddar A (2015) An integrated framework for humanoid embodiment with a BCI. In: IEEE Int. Conf. Robot. AutomGoogle Scholar
  20. 20.
    Kaneko K et al (2004) Humanoid robot HRP-2. In: IEEE Int. Conf. Robot. AutomGoogle Scholar
  21. 21.
    Mansard N, Stasse O, Evrard P, Kheddar A, (2009) A versatile generalized inverted kinematics implementation for collaborative working humanoid robots: the stack of tasks. In: 2009 Int. Conf. Adv. RobotGoogle Scholar
  22. 22.
    Kilteni K, Groten R, Slater M (2012) The sense of embodiment in virtual reality. Presence Teleoper Virtual Environ 21:373–387. doi: 10.1162/PRES_a_00124 CrossRefGoogle Scholar
  23. 23.
    Longo MR, Schüür F, Kammers MPM et al (2008) What is embodiment? a psychometric approach. Cognition 107:978–998. doi: 10.1016/j.cognition.2007.12.004 CrossRefGoogle Scholar
  24. 24.
    Blanke O, Metzinger T (2009) Full-body illusions and minimal phenomenal selfhood. Trends Cogn Sci 13:7–13. doi: 10.1016/j.tics.2008.10.003 CrossRefGoogle Scholar
  25. 25.
    Sackett DL (1979) Bias in analytic research. J Chronic Dis 32:51–63. doi: 10.1016/0021-9681(79)90012-2 CrossRefGoogle Scholar
  26. 26.
    Connor KM, Kobak KA, Churchill LE et al (2001) Mini-SPIN: a brief screening assessment for generalized social anxiety disorder. Depress Anxiety 14:137–140CrossRefGoogle Scholar
  27. 27.
    Seeley-Wait E, Abbott MJ, Rapee RM (2009) Psychometric properties of the mini-social phobia inventory. Prim Care Companion J Clin Psychiatry 11:231–236. doi: 10.4088/PCC.07m00576 CrossRefGoogle Scholar
  28. 28.
    Aymerich-Franch L, Petit D, Ganesh G, Kheddar A (2016) The second me: seeing the real body during humanoid robot embodiment produces an illusion of bi-location. Conscious Cogn 46:99–109. doi: 10.1016/j.concog.2016.09.017 CrossRefGoogle Scholar
  29. 29.
    Sanchez-Vives MV, Spanlang B, Frisoli A et al (2010) Virtual hand illusion induced by visuomotor correlations. PLoS ONE 5:e10381. doi: 10.1371/journal.pone.0010381 CrossRefGoogle Scholar
  30. 30.
    Aymerich-Franch L, Ganesh G (2015) The role of functionality in the body model for self-attribution. Neurosci Res. doi: 10.1016/j.neures.2015.11.001
  31. 31.
    Ehrsson H (2012) The concept of body ownership and its relation to multisensory integration. In: Stein BE (ed) The new handb. multisensory process. Cambridge, MA: Mit Press, pp 775–792Google Scholar
  32. 32.
    MacKenzie IS (2013) Human–computer interaction: an empirical research perspective. Morgan Kaufmann, WalthamGoogle Scholar
  33. 33.
    Kantowitz BH, Roediger HL III, Elmes DG (2015) Experimental psychology. Cengage Learning, Stamford, CT, USAGoogle Scholar
  34. 34.
    Greenwald AG (1976) Within-subjects designs: to use or not to use? Psychol Bull 83:314–320. doi: 10.1037/0033-2909.83.2.314 CrossRefGoogle Scholar
  35. 35.
    Aymerich-Franch L Mediated embodiment in new communication technologies. In: Khosrow-Pour M (ed) Encyclopedia of information science and technology, 4th edn. Hershey, IGI Global (in press)Google Scholar
  36. 36.
    Mori M (1970) The uncanny valley. Energy 7:33–35. doi: 10.1162/pres.16.4.337 Google Scholar
  37. 37.
    Ferrari F, Paladino MP, Jetten J (2016) Blurring human–machine distinctions: anthropomorphic appearance in social robots as a threat to human distinctiveness. Int J Soc Robot 1–16. doi: 10.1007/s12369-016-0338-y
  38. 38.
    Złotowski J, Proudfoot D, Yogeeswaran K, Bartneck C (2014) Anthropomorphism: opportunities and challenges in human–robot interaction. Int J Soc Robot 7:347–360. doi: 10.1007/s12369-014-0267-6 CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.CNRS-AIST Joint Robotics Laboratory (JRL)UMI3218/RL, National Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
  2. 2.CNRS-UM LIRMMInteractive Digital Human Group, UMR5506MontpellierFrance
  3. 3.National Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan

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