John G. Arthur

Learn More
This paper considers tactile augmentation, the addition of a physical object within a virtual environment (VE) to provide haptic feedback. The resulting mixed reality environment is limited in terms of the ease with which changes can be made to the haptic properties of objects within it. Therefore sensory enhancements or illusions that make use of visual(More)
This paper describes the research behind a part-task approach to both the development of, and the training offered, by a virtual reality simulator for knee arthroscopy. An ethnographic approach has been taken to examine the nature of task performance and the current training of the arthroscopic diagnosis of the knee. This Human Factors research is used to(More)
In this paper an example of Virtual Reality (VR) system design in a safety-critical training domain is discussed. In particular, a model for design is presented. This model seeks to create operational definitions of risk in the surgical domain. Perhaps more importantly, it also seeks to discover operational predictors of the risk of technology-transfer(More)
There is limited research considering the usability of medical virtual environments. Usability evaluation is an essential validation phase that considers the extent to which a product achieves its specific goals, with effectiveness, efficiency and satisfaction. A four-stage iterative approach is adopted to enhance usability in the development of a knee(More)
  • 1