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Electromyography signal processing approaches have traditionally been validated through computer simulations. Electromyography electrodes and systems are often not validated or have been validated on human subjects where there is no clear ground truth signal for comparison. We sought to develop a physical limb phantom for validation of electromyography hardware and signal processing approaches. We embedded pairs of wires within a conductive gelatin surrounding an artificial bone such that the antennae could broadcast identified ground truth signals. The ground truth signals can be simple sinusoids or more complex representations of muscle activity. With the phantom and surface electromyography electrodes, we were able to show varying levels of crosstalk between nearby recording electrodes as we altered the amplitude of the antennae signals. We were also able to induce motion artifacts in our recordings by lightly dropping the phantom on a surface while antennae broadcast signals. High-density electromyography recordings of the trials showed that traditional filtering techniques fail to fully eliminate relatively small motion artifacts. The results suggest that the electrical limb phantom could be a valuable tool for testing potential effects of muscle crosstalk and motion artifacts on different electromyography systems and signal processing approaches.
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Background and aims Many individuals with lower limb loss report concerns about other musculoskeletal symptoms resulting from amputation. The objective of this study was to assess chronic musculoskele...
Amputees often experience a phantom limb consisting in the vivid impression that the limb is not only still present, but in many cases, painful. These patients may also become restless legs syndrome (...
Spastic impaired limb function is a frequent result of brain lesions. Although its assessment is important for clinical and therapeutical management, it still lacks an objective measure to quantify th...
In this paper, a mechanical model of the skeletal muscle of human lower limb system is established by using the Hill muscle model and kinetic equation of the movement of lower extremities according to...
Phantom limb is a common sensation in amputees, who often report vivid experiences of voluntarily moving their phantom. Previous studies showed that phantom movement can be functionally disentangled f...
This international, multi-center, double-blind, randomized, controlled clinical trial aims to evaluate the efficacy of Phantom Motor Execution (PME) and Phantom Motor Imagery (PMI) as trea...
Because bilateral lower extremity amputees do not have an intact limb for use with the mirror, we are now proposing to conduct a pilot trial of two treatments for PLP - direct observation ...
Patients with limb amputations experience the sensation of the missing extremity, which is sometimes coupled with a persistent and debilitating pain in the missing limb, a condition known ...
Phantom limb pain is a complication of amputation. Although pre-empitve epidural analgesia was once thought to prevent such a com plication, recent studies did not demonstrate this. Periph...
The purpose of this study is to identify the best treatment sequence and combination of acupuncture points for the treatment of phantom limb or residual limb pain in the traumatic/surgical...
Perception of painful and nonpainful phantom sensations that occur following the complete or partial loss of a limb. The majority of individuals with an amputated extremity will experience the impression that the limb is still present, and in many cases, painful. (From Neurol Clin 1998 Nov;16(4):919-36; Brain 1998 Sep;121(Pt 9):1603-30)
An office established to help Congress participate and plan for the consequences of uses of technology. It provided information on both the beneficial and adverse effects of technological applications. The Office of Technology Assessment closed on September 29, 1995.
Evaluation of biomedical technology in relation to cost, efficacy, utilization, etc., and its future impact on social, ethical, and legal systems.
A computer simulation technique that is used to model the interaction between two molecules. Typically the docking simulation measures the interactions of a small molecule or ligand with a part of a larger molecule such as a protein.
A computer simulation developed to study the motion of molecules over a period of time.
Osteoporosis is a disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse. Follow and track&n...
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...