The Effects of Electrode Size and Orientation on the Sensitivity of Myoelectric Pattern Recognition Systems to Electrode Shift

Myoelectric pattern recognition systems for prosthesis control are often studied in controlled laboratory settings, but obstacles remain to be addressed before they are clinically viable. One important obstacle is the difficulty of maintaining system usability with socket misalignment. Misalignment...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering 2011-09, Vol.58 (9), p.2537-2544
Main Authors: Young, Aaron J., Hargrove, Levi J., Kuiken, Todd A.
Format: Article
Language:English
Subjects:
Accuracy
Adult
Applied sciences
Artificial Limbs
Biological and medical sciences
Computerized, statistical medical data processing and models in biomedicine
Controllability
Electrode shift
Electrodes
Electrodiagnosis. Electric activity recording
Electromyography
electromyography (EMG)
Electromyography - instrumentation
Electromyography - methods
Exact sciences and technology
Female
Humans
Information, signal and communications theory
Investigative techniques, diagnostic techniques (general aspects)
Male
Materials
Medical management aid. Diagnosis aid
Medical sciences
Models, Biological
Muscle Fibers, Skeletal - physiology
Muscles
Nervous system
Pattern recognition
Pattern Recognition, Automated - methods
Prostheses
Sensitivity and Specificity
Signal processing
Signal Processing, Computer-Assisted
Studies
Telecommunications and information theory
virtual reality prosthesis control
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Description
Summary:Myoelectric pattern recognition systems for prosthesis control are often studied in controlled laboratory settings, but obstacles remain to be addressed before they are clinically viable. One important obstacle is the difficulty of maintaining system usability with socket misalignment. Misalignment inevitably occurs during prosthesis donning and doffing, producing a shift in electrode contact locations. We investigated how the size of the electrode detection surface and the placement of electrode poles (electrode orientation) affected system robustness with electrode shift. Electrodes oriented parallel to muscle fibers outperformed electrodes oriented perpendicular to muscle fibers in both shift and no-shift conditions (p
ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.2011.2159216