A motor learning support system for speedy motion of an upper extremity is proposed. A learner throws a ball underhanded using a force feedback device, and then the learner can perform the motion feeling ball’s weight. Throwing motion is speedy and complicate, so we built a training environment that the learner can select challenge level that is suitable to learner’s ability. Furthermore, the s...

In this paper we present a highly expressive, robust, and easy-to-build system that provides force-feedback interaction for mobile computing devices (MCD). Our system, which we call fortissimo (ff ), utilizes standard built-in accelerometer measurements in conjunction with generic foam padding that can be easily placed under a device to render an expressive force-feedback performance setup. for...

In this paper, we model, analyze, and control an experimental set-up of a servo pneumatic cylinder. The dynamic behaviour of pneumatic actuator systems is dominant by nonlinear functions. First, a mathematical model for the pneumatic system is derived. Secondly, we investigate the mathematical properties of this model and show boundedness and positiveness of certain variables. Thirdly, we prove...

The objective of this study was to determine if load receptors contribute to the afferent-mediated enhancement of ankle extensor muscle activity during the late stance phase of the step cycle. Plantar flexion perturbations were presented in late stance while able-bodied human subjects walked on a treadmill that was declined by 4%, inclined by 4% or held level. The plantar flexion perturbation p...

This paper discusses haptic feedback for interactions with sliders and buttons on a virtual control panel. We present a haptic technique that uses both feedback from a portable force-feedback glove and feedback from direct contact with a real panel. An evaluation comparing this combined approach to each individual approach is presented. The combination of two approaches is shown to result in im...

Previous research suggests that removal of visual feedback of force output in a sequential force production task results in a continuous escalation of the force magnitudes produced. Central predictive mechanisms involving reafference result in self-generated forces being perceived as weaker, thus leading to a systematic over-production of force. While this effect has been widely examined with r...

BACKGROUND Collision detection and response are two crucial aspects in a virtual surgery simulator, which significantly affect the output in real-time response and simulation realism. METHODS We propose a collision detection algorithm which employs a novel hierarchical spatial hashing to effectively achieve appropriate parameters. Thereafter we present a hybrid collision response scheme which...

Emphasis has been placed on improving patient outcomes in healthcare management. Significant patient morbidity and mortality exists from inappropriate procedural technique and percutaneous catheter needle insertion procedures have been linked to medical complications. Healthcare trainees learn these procedures through trial and error and most existing simulators are synthetic tissue based and l...