Abstract
The present research aims to explore the bioelectric activity of muscles using a high-resolution electromyograph and to analyze the prospects of the electromyograph to develop bioelectric patterns for the prosthesis control method based on the data recognition system. The activity of the healthy forearm muscles was investigated during the cyclic activity of fingers in different modes. In addition, the impact of filters on the quality and informativity of myoelectric signals, as well as on the development of bioelectric activity patterns was analyzed. The virtually developed bandpass filters were utilized as experimental filters. The filter impact analysis included the comparison of the signal recorded in the frequency band from 0 to 10000 Hz with the signal filtered in the frequency band from 20 to 500 Hz. The research revealed the advantages of a high-resolution electromyogram for the pattern recognition-based myocontrol.
Highlights
Loss of a limb as a result of accident or injury can have a considerable psychological and physical impact
The obtained results allow us to assume that cyclically repeating fluctuations of a highresolution myoelectric signal, which change simultaneously with the finger movements, can be applied for the development of a bioelectric control system based on the detection of potential threshold values and data recognition techniques for specific signal harmonics
The conducted research confirmed the efficiency of the electrode placement scheme proposed by Vorotnikov for electromyographic study in a wide frequency range using a high-resolution nanosensor-based electromyograph
Summary
Loss of a limb as a result of accident or injury can have a considerable psychological and physical impact. The upper limb amputees experience difficulties with simple thing that do not usually require any efforts. In such cases, prostheses allow people to return to a near normal life: to work, to do sport, to cook, etc. There are three most common types of hand prosthetic devices: cosmetic, bodypowered, and bioelectric prostheses. Cosmetic hand prostheses are designed to hide the lack of a limb from stares in public. Natural-looking prostheses are focused on the aesthetic appearance, not on the restoration of motor functions. This type of prosthesis has been used to restore a partially amputated hand (Figure 1, a) [1]
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