This study investigates the user experience to clarify what it is like to experience stories in VR (virtual reality) and how immersion influences story experiences in immersive storytelling. This ...study explores the immersive storytelling context, developing and testing a VR experience model that integrates presence, flow, empathy, and embodiment. The results imply that users’ personal traits correlates immersion in VR: user experience in VR depend on individual traits, which in turns influence how strongly users immerse in a VR. The way users view and accept VR stories derives from the way they envisage and intend to experience them. Rather than simply being influenced by technological features, users have intentional and purposeful control over VR stories. The findings of this study suggest that the cognitive processes by which users experience quality, presence, and flow determine how they will empathize with and embody VR stories.
•User experience of virtual reality storytelling.•How immersion influences story experiences in immersive storytelling.•Users' personal traits correlates immersion in VR.•The way users view and accept VR stories derives from the way they envisage and intend to experience them.
The current meta-analysis aims to investigate and clarify existing research on virtual reality (VR) as a medium to elicit empathy. An exhaustive literature search (updated to February 29, 2020) ...enabled us to locate seven published articles, yielding a total of nine independent samples. The results reveal statistically significant positive changes in perspective-taking outcomes after VR exposure (
= 0.51 95 percent CI: 0.15-0.88) but they did not note in empathy (
= 0.21 95 percent confidence interval, CI: -0.37-0.79). A potential limitation of this work is the low number of studies included. Implications and directions for theoretical development and empirical research are also discussed.
Advances in computer graphics algorithms and virtual reality (VR) systems, together with the reduction in cost of associated equipment, have led scientists to consider VR as a useful tool for ...conducting experimental studies in fields such as neuroscience and experimental psychology. In particular virtual body ownership, where the feeling of ownership over a virtual body is elicited in the participant, has become a useful tool in the study of body representation in cognitive neuroscience and psychology, concerning how the brain represents the body. Although VR has been shown to be a useful tool for exploring body ownership illusions, integrating the various technologies necessary for such a system can be daunting. In this paper, we discuss the technical infrastructure necessary to achieve virtual embodiment. We describe a basic VR system and how it may be used for this purpose, and then extend this system with the introduction of real-time motion capture, a simple haptics system and the integration of physiological and brain electrical activity recordings.
Maps and Globes in Virtual Reality Yang, Yalong; Jenny, Bernhard; Dwyer, Tim ...
Computer graphics forum,
June 2018, 2018-06-00, 20180601, Letnik:
37, Številka:
3
Journal Article
Recenzirano
Odprti dostop
This paper explores different ways to render world‐wide geographic maps in virtual reality (VR). We compare: (a) a 3D exocentric globe, where the user's viewpoint is outside the globe; (b) a flat map ...(rendered to a plane in VR); (c) an egocentric 3D globe, with the viewpoint inside the globe; and (d) a curved map, created by projecting the map onto a section of a sphere which curves around the user. In all four visualisations the geographic centre can be smoothly adjusted with a standard handheld VR controller and the user, through a head‐tracked headset, can physically move around the visualisation. For distance comparison exocentric globe is more accurate than egocentric globe and flat map. For area comparison more time is required with exocentric and egocentric globes than with flat and curved maps. For direction estimation, the exocentric globe is more accurate and faster than the other visual presentations. Our study participants had a weak preference for the exocentric globe. Generally the curved map had benefits over the flat map. In almost all cases the egocentric globe was found to be the least effective visualisation. Overall, our results provide support for the use of exocentric globes for geographic visualisation in mixed‐reality.
Abstract
Greenery is a key element of quality window views. This study aims to clarify the quantitative effect of greenery on view satisfaction in urban offices. Green view factor (GVF) is proposed ...to measure greenery visible through windows. Subjective evaluation experiments were conducted using a virtual reality system for different GVFs between 0% and 100%. It was found that greenery increases view satisfaction by up to 20 to 30 points on a 100-point scale. But the view satisfaction does not simply depend on the GVF. The layout and spacing of greenery are important. Greenery occupying about 50% of the window width at intervals maximizes the view satisfaction in the case of full-window walls.
Therapeutic virtual reality (VR) has emerged as an effective, drug-free tool for pain management, but there is a lack of randomized, controlled data evaluating its effectiveness in hospitalized ...patients. We sought to measure the impact of on-demand VR versus "health and wellness" television programming for pain in hospitalized patients.
We performed a prospective, randomized, comparative effectiveness trial in hospitalized patients with an average pain score of ≥3 out of 10 points. Patients in the experimental group received a library of 21 VR experiences administered using the Samsung Gear Oculus headset; control patients viewed specialized television programming to promote health and wellness. Clinical staff followed usual care; study interventions were not protocolized. The primary outcome was patient-reported pain using a numeric rating scale, as recorded by nursing staff during usual care. Pre- and post-intervention pain scores were compared immediately after initial treatment and after 48- and 72-hours.
There were 120 subjects (61 VR; 59 control). The mean within-subject difference in immediate pre- and post-intervention pain scores was larger in the VR group (-1.72 points; SD 3.56) than in the control group (-0.46 points; SD 3.01); this difference was significant in favor of VR (P < .04). When limited to the subgroup of patients with severe baseline pain (≥7 points), the effect of VR was more pronounced vs. control (-3.04, SD 3.75 vs. -0.93, SD 2.16 points; P = .02). In regression analyses adjusting for pre-intervention pain, time, age, gender, and type of pain, VR yielded a .59 (P = .03) and .56 (P = .04) point incremental reduction in pain versus control during the 48- and 72-hour post-intervention periods, respectively.
VR significantly reduces pain versus an active control condition in hospitalized patients. VR is most effective for severe pain. Future trials should evaluate standardized order sets that interpose VR as an early non-drug option for analgesia.
Immersive virtual reality (VR) video is becoming increasingly popular owing to its enhanced immersive experience. To enjoy ultrahigh resolution immersive VR video with wireless user equipments, such ...as head-mounted displays (HMDs), ultralow-latency viewport rendering, and data transmission are the core prerequisites, which could not be achieved without a huge bandwidth and superior processing capabilities. Besides, potentially very high energy consumption at the HMD may impede the rapid development of wireless panoramic VR video. Multiaccess edge computing (MEC) has emerged as a promising technology to reduce both the task processing latency and the energy consumption for HMD, while bandwidth-rich terahertz (THz) communication is expected to enable ultrahigh-speed wireless data transmission. In this article, we propose to minimize the long-term energy consumption of a THz wireless access-based MEC system for high quality immersive VR video services support by jointly optimizing the viewport rendering offloading and downlink transmit power control. Considering the time-varying nature of wireless channel conditions, we propose a deep reinforcement learning-based approach to learn the optimal viewport rendering offloading and transmit power control policies and an asynchronous advantage actor-critic (A3C)-based joint optimization algorithm is proposed. The simulation results demonstrate that the proposed algorithm converges fast under different learning rates, and outperforms existing algorithms in terms of minimized energy consumption and maximized reward.
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