Nowadays, the development of a Virtual Reality (VR) application is still very time-consuming and hard for a non VR-expert. In addition, the VR applications often lack the necessary semantic information to make the VR application more intuitive and more attractive for the end-user. This paper describes a new approach for designing VR applications using ontologies, which make the design of the VR...

BACKGROUND Mechanism and effects of vagal response (VR) during cryoballoon ablation procedure on the cardiac autonomic nervous system (ANS) are unclear. The present study aimed to evaluate the relationship between VR during cryoballoon catheter ablation for atrial fibrillation and ANS modulation by evaluating epicardial adipose tissue (EAT) locations and heart rate variability (HRV) analysis. ...

BACKGROUND Virtual reality (VR) and physical model (PM) simulators differ in terms of whether the trainee is manipulating actual 3-dimensional objects (PM) or computer-generated 3-dimensional objects (VR). Much like video games (VG), VR simulators utilize computer-generated graphics. These differences may have profound effects on the utility of VR and PM training platforms. In this study, we ai...

OBJECTIVE To investigate the effects of using motor imagery (MI) in combination with a virtual reality (VR) program on healthy volunteers and stroke patients. In addition, this study investigated whether task variability within the VR-guided MI programs would influence corticomotor excitability. METHODS The present study included 15 stroke patients and 15 healthy right-handed volunteers who w...

3D interfaces allow easy and intuitive human-computer communication. These 3D interfaces are most often used in the virtual reality (VR) and VR systems. This fact was the reason for creation of this dissertation thesis which focuses on the formal description of the process of VR system creation. Thesis is divided into five sections. The first section presents the current state of the VR, 3D int...

OBJECTIVE Since the mid-1990s, a significant scientific literature has evolved regarding the outcomes from the use of what we now refer to as clinical virtual reality (VR). This use of VR simulation technology has produced encouraging results when applied to address cognitive, psychological, motor, and functional impairments across a wide range of clinical health conditions. This article addres...

The aim of the present study was to determine the outcome of patients undergoing pancreatic resection with (VR+) or without (VR-) mesenteric-portal vein resection for pancreatic carcinoma. Between January 1998 and December 2012, 241 patients with pancreatic cancer underwent pancreatic resection: in 64 patients, surgery included venous resection for macroscopic invasion of mesenteric-portal vein...

In this research, the effectiveness of neurofeedback, along with virtual reality (VR), in reducing the level of inattention and impulsiveness was investigated. Twenty-eight male participants, aged 14-18, with social problems, took part in this study. They were separated into three groups: a control group, a VR group, and a non-VR group. The VR and non-VR groups underwent eight sessions of neuro...

The success rate for treating phobias with in vivo exposure is high. Unfortunately, few phobics (less than 15-20%) ever seek treatment. Virtual reality (VR) exposure therapy is also proving to be highly effective. The present surveys assessed 162 students high in fear of spiders. In Study 1, when asked to choose between multisession in vivo exposure vs. multisession VR exposure therapy, 81% cho...

A VR-MVF system was developed and used for the treatment of CRPS at the Okayama University Hospital. Preliminary results from applying this system in patients showed that VR-MVF therapy may be plausible for CRPS treatment. The effects of VR-MVF therapy, however, may be enhanced by increasing the frequency of treatments. Thus, a remote personal VR-MVF system was designed for future implementatio...