Virtual reality (VR) headsets are enabling a wide range of new opportunities for the user. For example, in the near future users may be able to visit virtual shopping malls and virtually join international conferences. These and many other scenarios pose new questions with regards to privacy and security, in particular authentication of users within the virtual environment. As a first step towa...

OBJECTIVE Virtual reality (VR) has begun to be used to research the key psychotic symptom of paranoia. The initial studies have been with non-clinical individuals and individuals at high risk of psychosis. The next step is to develop the technology for the understanding and treatment of clinical delusions. Therefore the present study investigated the acceptability and safety of using VR with in...

abstract background: in recent studies, using virtual reality (vr) has been proposed as a nonpharmacological method for anxiety reduction, but until this time, its effects have not been assessed on anxiety during episiotomy repair. this study aimed to determine the effect of audiovisual distraction (vr) on anxiety in primiparous women during episiotomy repair. materials and methods: this clinic...

Virtual reality (VR) distraction has become increasingly available in health care contexts and is used in acute pain management. However, there has been no systematic exploration of the importance of the content of VR environments. Two studies tested how interacting with nature VR influenced experienced and recollected pain after 1 week. Study 1 (n = 85) used a laboratory pain task (cold presso...

In recent years, clinical studies have begun to demonstrate the effectiveness of VR as an intervention tool for a variety of neurological conditions. There remain, however, a number of important issues that must be addressed in order to determine how widely VR-based intervention should be applied, and the user and platform characteristics that may be important when using VR in clinical settings...

Excessive pain during medical procedures performed in unanesthetized patients is frequently reported, but can be reduced with virtual reality (VR) distraction. Increasing the person's illusion of going into the virtual world may increase how effectively VR distracts pain. Healthy volunteers aged 18-20 years participated in a double-blind between-groups design. Each subject received a brief base...

OBJECTIVES This study investigated the antiviral efficacy of adefovir (ADV) rescue therapy and the feasibility of lamivudine (LAM) discontinuation in LAM-resistant chronic hepatitis B (CH-B) patients who had attained a virological response (VR) with LAM + ADV combination therapy. METHODS The VR and virological breakthrough (VBT) were analyzed in 106 consecutively enrolled LAM-resistant CH-B p...

In this paper, we propose a simple variant of the original SVRG, called variance reduced stochastic gradient descent (VR-SGD). Unlike the choices of snapshot and starting points in SVRG and its proximal variant, Prox-SVRG, the two vectors of VR-SGD are set to the average and last iterate of the previous epoch, respectively. The settings allow us to use much larger learning rates, and also make ...

The use of Virtual Reality (VR) is normally associated with expensive, high-performance computing and graphics systems. This is especially the case in immersive VR systems that support head-tracking, hand-tracking and stereo vision. This causes a difference between the capabilities of VR facility centres with their high-end equipment and small/medium sized businesses and research groups that us...