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Nervixxx introduces neural computing to overcome the limit of conventional performance systems that uses tangible computing and physical computing.Specifically, we utilized the EEG(electroencephalogram) which is the most informative of the biosignals, and the EMG (electromyogram) which has a high controllability. Users manipulate the tangible objects that are the major function of this system. This...
Interventional radiology is a rapidly expanding speciality using minimally invasive techniques to treat a multitude of clinical problems. Current work in progress aims to create an affordable virtual training tool to reduce training times and patient risk during a trainee practitioners learning cycle. The procedure of arterial catheterisation has been broken down into a number of subtasks, one of...
To better understand motion perception in immersive virtual environments, we conducted a user study to quantify perception of scene motion as subjects yawed their heads. We measured psychometric functions of scene-velocity thresholds for different head motions and then extracted 75% thresholds, creating scene-velocity thresholds as functions of three measures of head motion: 1) angular range, 2) peak...
Interactive television (iTV) is the convergence of television with digital media technologies. iTV must be treated as a unique medium with its own set of constraints and opportunities. A set of principles to follow, when designing iTV applications, is presented. Heuristics to be applied when evaluating iTV applicationspsila usability is described.
This preliminary study looks into how visual information affects motion planning in a gravitational environment. Recently, it has been shown that goal-directed tasks, e.g. simple pointing actions, are performed using a combination of a priori knowledge and closed-loop information, coming from proprioceptive-vestibular and visual feedback. In particular it has been observed that visual information...
Performance improvements in graphics hardware have made it possible to visualize complex virtual environments and provided opportunities to interact with these in a more realistic way. In this paper a virtual reality application for simulating a billiards game is presented. A real billiard cue is used and its movements are reproduced in the virtual environment using a visual marker detection system...
This paper describes the design, development and user study of a text-to-speech system for reviewing email messages. The system retrieves messages, converts them to audio files, and facilitates transferring the messages to a portable listening device. This study reviews the efficacy of such a system and compares the users' ability to comprehend spoken audio messages verses written messages. According...
We explore some of the characteristics of multimodal input interaction spaces for notification systems within a multi-tasking environment like a command and control center using two promising interaction methods: gestures and touch based input through a laboratory experiment comparing both techniques. Results of our study suggest that gestures are better suited for multi-tasking situations because...
There is an increasing interest in computer-based visualizations to provide insights and ease understandings of complex information. However, many of the proposed visualization tools/techniques seldom find real use in practice. The main reason is that they do not adequately address the issue of easing comprehensibility of underlying information. Through a case study with two static software visualization...
A novel haptic teleoperated scheme for an efficient obstacle avoidance under human guidance is introduced. A remote robot immersed in an environment with obstacles is guided by a user using the end-effector of a haptic device. The system provides force feedback to the user when he approaches a potential field surrounding an obstacle. The user assigns the potential fields to the obstacles based on...
In this paper we evaluate two different auditory interfaces for word processing application. The interfaces are in the form of hierarchical menu structures and use spatial sounds in two different spatial configurations. The first menu - AH - has a ring shaped horizontal configuration of the sound sources, whereas the second - AV - has a vertical configuration of the sound sources. Spatial sounds are...
The reaction time and the accuracy in the brain images of 2D or 3D figures were studied. The image task for the frame of a 3D object from 2D figures (2D- 3D task) in the brain had the longest reaction time (p, the probability value of a statistical hypothesis test, < 0.01); the accuracy of this task was decreased compared to that of the other tasks. The reaction time in the 2D-3D task had a significant...
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