Body Movement Reduces Pain Intensity In Virtual Reality-Based Analgesia

In this study we investigated the relationship between body movement during virtual reality (VR) analgesia and the experience of pain. Thermal (cold) stimulation was used to inflict pain. Two measures of pain were usedpain tolerance and pain intensity. Participants were wearing head mounted displays (Oculus Rift DK2) and were playing a game created by authors of the study.Forty-six students of Wroclaw University participated in a within-subject design experiment. Each subject participated in a non-VR control condition and in two experimental conditions. Participants navigated the VR game using a computer mouse, but the mouse sensitivity (and therefore amount of physical movement necessary to navigate) was different in each experimental condition. We also measured feeling of presence in VR, game behavior, and attitudes toward the game.The amount of body movement while steering the game was related to a decrease in pain intensity, but not in pain tolerance. This was an opposite result to our previously published experiment where we found an effect on pain tolerance but not on sensitivity. There was no significant correlation between presence and any of the pain measures.