In recent years interactive narratives emerged as a new form of digital entertainment, allowing users to interact and change stories according to their own desires. In this paper, we explore the use of social networks as a way of interaction in interactive narratives. We present the interaction interface of an interactive storytelling system that allows users to interact and change stories thro...

Our goal is to develop a new family of automatic tools for the diagnosis of schizophrenia, using Virtual Reality Technology (VRT). VRT is specifically suitable for this purpose, because it allows for multi-modal stimulation in a complex setup, and the simultaneous measurement of multiple parameters. In this work we studied sensory integration within working memory, in a navigation task through ...

Literature concerning the visualization of abstract data in immersive environments is sparse. This publication is intended to (1) stimulate the application of abstract data visualization in such environments and to (2) introduce novel concepts involving the user as an active part of the interactive exploratory visualization process. To motivate discussion, requirements for the visualization of ...

It is known that a through understanding of the end-user is the most valuable information to improve design, training, maintenance and assembly/disassembly processes of products and systems. The most widely used method to analyze human-system interaction, user experiments, which requires a product prototype, a test environment and a researcher to watch and collect data. This results in a proced...

The following letter describes two pilot studies testing the feasibility of immersive virtual reality therapy on pediatric patients with unilateral lower limb complex regional pain syndrome (CRPS). In these studies, patients completed target-hitting tasks in virtual reality using novel avatar bodies. Patients completed all sessions without adverse effects and both patients and parents were enth...

Association Rules (AR) represent one of the most powerful and largely used approach to detect the presence of regularities and paths in large databases. Rules express the relations (in terms of co-occurence) between pairs of items and are defined in two parts: support and confidence. Most techniques for finding AR scan the whole data set, evaluate all possible rules and retain only rules that h...

We present a user interface for virtual environments that utilizes the non-dominant hand to provide haptic feedback to the dominant hand while it interacts with widgets on a virtual control panel. We believe this technique improves on existing prop-based methods of providing haptic feedback. To gauge the interface’s effectiveness, we performed a usability study. We do not present a formal compa...

We describe a Telerehabilitation system that has been developed in our laboratory. The system allows a therapist in a remote location to conduct treatment sessions, using a virtual environment based motor training system, with a patient who is located at home. The design, technical testing and clinical feasibility testing of the system are reported. Results from the first two stroke patients to...

In this paper we present two methods to navigate in virtual environments displayed in a large display using gestures detected by a depth sensor. We describe the rationale behind the development of these methods and a user study to compare their usability performed with the collaboration of 17 participants. The results suggest the users have a better performance and prefer one of them, while con...

We introduce embodied lenses for visual queries on tabletop surfaces using physical interaction. The lenses are simply thin sheets of paper or transparent foil decorated with fiducial markers, allowing them to be tracked by a diffuse illumination tabletop display. The physical affordance of these embodied lenses allow them to be overlapped, causing composition in the underlying virtual space. W...