Lucid dreaming of a prior virtual-reality experience with ego-transcendent qualities: a proof-of-concept study

The immersive environments of virtual reality (VR) have potential to engender a vast range of experiences. Although participants recognize these experiences as artificial, the consequences can still be profound. Compared to VR, lucid dreams-characterized by awareness that one is dreaming-potentially allow for even more expansive explorations of immersive multisensory experience. Furthermore, lucid dreaming could conceivably enhance the impact of a prior VR experience, producing more profound effects than the VR experience alone. As an initial step along those lines, we attempted to induce lucid dreams about a VR experience called <i>Ripple</i>, with the goal of documenting the impact of the combination. In prior research, <i>Ripple</i> by itself was shown to reduce self-other boundaries and enhance interconnectedness. We recruited four frequent lucid dreamers to experience <i>Ripple</i> on two occasions, followed by an overnight session with sounds from <i>Ripple</i> presented quietly during polysomnographically verified rapid eye movement (REM) sleep. Three participants experienced lucid dreams about <i>Ripple</i> that night, and all four reported dreams containing elements of <i>Ripple</i>. The lucid dreams were validated in real time by physiological signals from the dreamers to indicate their concurrent experience of lucidity in the dream, followed by signals of dreaming about the VR experience. On this basis, we can confirm that it was possible in these circumstances for people to have lucid dreams recapitulating elements of the prior VR experience. Our findings also showcase how the synergistic combination of VR and lucid dreaming could be strongly beneficial.