Wireless sEMG System with a Microneedle-Based High-Density Electrode Array on a Flexible Substrate

Surface electromyography (sEMG) signals reflect muscle contraction and hence, can provide information regarding a user’s movement intention. High-density sEMG systems have been proposed to measure muscle activity in small areas and to estimate complex motion using spatial patterns. However, conventi...

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Vydáno v:Sensors (Basel, Switzerland) Ročník 18; číslo 1; s. 92
Hlavní autoři: Kim, Minjae, Gu, Gangyong, Cha, Kyoung, Kim, Dong, Chung, Wan
Médium: Journal Article
Jazyk:angličtina
Vydáno: Switzerland MDPI AG 30.12.2017
MDPI
Témata:
Electrodes
high-density electrode array
microneedle array electrode
surface electromyography
surface electromyography
microneedle array electrode
high-density electrode array
ISSN:1424-8220, 1424-8220
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Popis
Shrnutí:Surface electromyography (sEMG) signals reflect muscle contraction and hence, can provide information regarding a user’s movement intention. High-density sEMG systems have been proposed to measure muscle activity in small areas and to estimate complex motion using spatial patterns. However, conventional systems based on wet electrodes have several limitations. For example, the electrolyte enclosed in wet electrodes restricts spatial resolution, and these conventional bulky systems limit natural movements. In this paper, a microneedle-based high-density electrode array on a circuit integrated flexible substrate for sEMG is proposed. Microneedles allow for high spatial resolution without requiring conductive substances, and flexible substrates guarantee stable skin–electrode contact. Moreover, a compact signal processing system is integrated with the electrode array. Therefore, sEMG measurements are comfortable to the user and do not interfere with the movement. The system performance was demonstrated by testing its operation and estimating motion using a Gaussian mixture model-based, simplified 2D spatial pattern.
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These authors contributed equally to this work.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18010092