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The standing balance undergoes declines with aging that contributes the fall of the elderly. But the age-related balance control during quiet standing upon a slope has not been fully understood. This study aimed to investigate the effects of aging on muscle activation during quiet standing on a slope with different angles. Sixteen healthy young subjects and 16 healthy elderly subjects participated...
This is a live demonstration of the work described in [1]. The paper ID of this submission is 1634. The goal of this work is to use a neuromorphic model for providing tactile feedback to a prosthetic hand to improve grasping functionality. Custom force sensors are placed on the fingertips of a bebionc3 (Steeper, Leeds, UK) prosthetic hand and communicate with the prosthesis controller (Infinite Biomedical...
Due to the growing field of neuro-prosthetics and other brain-machine interfaces that employ human-like control schemes, it has become a priority to design sensor and actuation mechanisms that relay tactile information to the user. Unfortunately, most state of the art technology uses feedback techniques that are invasive, costly or inefficient for the general population. This paper proposes a feasible...
Virtual Reality environments have the ability to present users with rich visual representations of simulated environments. However, means to interact with these types of illusions are generally unnatural in the sense that they do not match the methods humans use to grasp and move objects in the physical world. We demonstrate a system that enables users to interact with virtual objects with natural...
Grasp stability in the human hand has been resolved by means of an intricate network of mechanoreceptors integrating numerous cues about mechanical events, through an ontogenetic grasp practice. An engineered prosthetic interface introduces considerable perturbation risks in grasping, calling for feedback modalities that address the underlying slip phenomenon. In this study, we propose an enhanced...
This study describes the design and feasibility testing of a hand rehabilitation system that provides haptic assistance for hand opening in moderate to severe hemiplegia while subjects attempt to perform bilateral hand movements. A cable-actuated exoskeleton robot assists the subjects in performing impaired finger movements but is controlled by movement of the unimpaired hand. In an attempt to combine...
We have previously shown that augmentative vibrotactile feedback can improve performance of a virtual object manipulation task using the finger. Here we studied the effects of vibrotactile feedback using instead electromyographic (EMG) control of object manipulation in N=6 healthy participants. Results showed that users were able to increase performance on an object manipulation task via EMG control...
In this paper, we introduce a novel technology to convert bioelectrical signals into sound and its application in biofeedback. The surface electromyogram is adopted as the bioelectrical signal and converted into an auditory signal. The sound conversion occurs inside a wearable device. In general, visual feedback can provide more information than acoustic feedback, however, we assume that the latter...
Prosthetic technology is a prime candidate for the integration of haptic feedback. Conventional myoelectric prostheses do not have a mechanism to convey any sensory information, making it difficult for users to feel connected to their hand and to engage in active grasping and exploration tasks. Vibrotactile stimulation is a simple and safe choice for a noninvasive haptic display that can be easily...
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