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When two partners perform a joint physical task, each of them experiences a force that sums together a component generated by the partner and another generated from the environment. To investigate whether subjects are able to distinguish these two components, we created a force perception task in which two partners indicate the direction of an external force applied to a rigid bar that they grasp...
A space-variant representation of images is of great importance for active vision systems capable of interacting with the environment. A precise processing of the visual signal is achieved in the fovea, and, at the same time, a coarse computation in the periphery provides enough information to detect new saliences on which to bring the focus of attention. In this work, different techniques to implement...
The haptic modality is a direct and informative communication channel when manipulating objects jointly, but it may also be difficult to interpret. Indeed, the forces generated by the partner and the environment are summed together. This work uses techniques from psychophysics to investigate the ability of humans to untangle these two sources when collaborating in a joint perceptual task where one...
Low-cost gaming technology offers promising devices for the rehabilitation of stroke patients at home. While several attempts have been made to use low-cost motion tracking devices (Kinect) or balance boards (Wii Board), the potential of low-cost haptic devices has yet to be explored in this context. The objective of this study was to investigate whether it is possible to influence postural stability...
Video-games are effective and motivating tools in the rehabilitation of patients. This study presents a video-game based platform controlled by a haptic device for the rehabilitation of Neglect patients. Haptic structure, game engine, game design criteria and example games are presented in detail.
Rehabilitation for stroke patients with postural instability or balance disorders can be enhanced using game-based rehabilitative strategies. Our work explored the potential of commercially available haptic devices for a home rehabilitation system. One group of participants used a low-cost device (Falcon) while another group used a high-end device (Omega). Both groups performed various tasks with...
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