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We describe the design and testing of a system that integrates rich virtual environments and assist as needed robotics to allow children with upper extremity impairments to perform rehabilitation activities in the form of computer games. Five simulations as well as positioning and interface approaches are described. To provide proof of concept we trained four children with mild to moderate upper extremity...
Antiphasic electromyographic (EMG) activities between biarticular arm muscles are indispensable for smooth performance. In the case of two-joint arm movement in a planar horizontal plane, elbow and shoulder joint movements were achieved by the biceps brachii (BB) and the triceps brachii muscles (TB). To our knowledge, however, no conclusions have been reached concerning the antiphasic EMG activities...
Task-oriented repetitive movements can improve motor recovery in patients with neurological or orthopaedic lesions. HEnRiE is a robot based haptic environment for simultaneous training of reaching and grasping movements. It consists of a robot with three active and two passive degrees of freedom and a grasping device with one degree of freedom. A training scenario that includes a virtual physiotherapist...
Rehabilitation robots start to become an important tool in stroke rehabilitation. Compared to manual arm training, robot-supported training can be more intensive, of longer duration, repetitive and task-oriented. Therefore, these devices have the potential to improve the rehabilitation process in stroke patients. While in the past, most groups have been working with endeffector-based robots, exoskeleton...
The Rutgers Arm II trains primarily shoulder motor control, arm dynamic response, endurance and cognitive anticipatory strategies in virtual environments. It improves on our earlier Rutgers Arm by replacing magnetic tracking with a visual tracking and by the use of a training table that tilts. Pilot trials with a single subject showed clear dependency on table tilt angle. Further trials are ongoing.
We have developed a robotic interface to train hand and finger function. HandCARE is a Cable-actuated rehabilitation system, in which each finger is attached to an instrumented cable loop allowing force control and a predominantly linear displacement. The device, whose designed is based on biomechanical measurements, can assist the subject in opening and closing movements and can be adapted to accommodate...
Assistive technologies have recently emerged to improve the quality of life of severely disabled people by enhancing their independence in daily activities. Since many of those individuals have limited or non-existing control from the neck downward, alternative hands-free input modalities have become very important for these people to access assistive devices. In hands-free control, head movement...
Assistive technologies have recently emerged to improve the quality of life of severely disabled people by enhancing their independence in daily activities. Since many of those individuals have limited or non-existing control from the neck downward, alternative hands-free input modalities have become very important for these people to access assistive devices. In hands-free control, head movement...
The effects of stroke are debilitating on the American population. Past studies of robot-aided motor training for survivors have proven to be effective in upper limb motor recovery. However, survivors also suffer from loss or impairment of sensation. Sensory impairment is an important predictor for motor recovery of stroke survivors. Studies have suggested that sensory inputs during robot-aided motor...
In this paper the physical and mathematical models of a knee-joint are presented. It gives possibility for measurement head's programming to choose right loads for rehabilitation or training and assures the instant control and correction during the exercises.
Since most functional activities of daily living, involving the upper-extremity, are bilateral in nature, a rehabilitation system with functionally integrated activities could result in stronger training effects on the sensorimotor abilities of patients. The virtual reality piano trainer, described here, incorporates bilateral and multi-joint movements to exercise the hands, wrists and forearms. In...
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