Mixed reality analgesia “visual + tactile” treatment (avatar VR + yes real water)
HMD, pain
APPENDIX
During the interactive embodied virtual hand avatar VR analgesia condition with tactile feedback (VR + Yes real water, see Fig. Mixed Reality. VR + real water. While wearing the Meta Quest2 VR HMD, using camera based hand tracking, any movements of the participant’s real hands or fingers in the real world are seen by the healthy volunteer participants in the virtual world. During the mixed reality condition, when their virtual hand went into a bowl of animated water in VR (left image), their real hand simultaneously went into a carefully positioned bowl of real water designed to give the computer generated virtual water tactile qualities (image on the right, right image copyright Hunter Hoffman, UW, For pain stimuli during virtual reality, in addition to answering questions 1–5 mentioned earlier (e.g., worst pain ratings), participants were also asked the following questions after each VR experience (see full questionnaire in "Appendix Further questions focused on embodiment and sense of agency and the participants perceived reality of the VR experience: While you were in VR, to what extent did you suspend disbelief and accept the idea that the virtual hands were your hands while you were in VR, “the virtual hands were my hands”. This scale was adapted from