Cited by 438Muscle activation and electromyography studiesProsthetics and Rehabilitation RoboticsEEG and Brain-Computer Interfaces

The optimal controller delay for myoelectric prostheses

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Farrell, Todd R., Weir, Richard F.·2007·IEEE Transactions on Neural Systems and Rehabilitation Engineering

Abstract

A tradeoff exists when considering the delay created by multifunctional prosthesis controllers. Large controller delays maximize the amount of time available for EMG signal collection and analysis (and thus maximize classification accuracy); however, large delays also degrade prosthesis performance by decreasing the responsiveness of the prosthesis. To elucidate an "optimal controller delay" twenty able-bodied subjects performed the Box and Block Test using a device called PHABS (prosthetic hand for able bodied subjects). Tests were conducted with seven different levels of controller delay ranging from nearly 0-300 ms and with two different artificial hand speeds. Based on repeted measures ANOVA analysis and a linear mixed effects model, the optimal controller delay was found to range between approximately 100 ms for fast prehensors and 125 ms for slower prehensors. Furthermore, the linear mixed effects model shows that there is a linear degradation in performance with increasing delay.

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Cited by

Sorted by citations

Authors
Farrell, T. R., & Weir, R. F.
Affiliations
Northwestern University (US)
Venue
IEEE Transactions on Neural Systems and Rehabilitation Engineering
Published
2007-03
Volume
15
Issue
1
Pages
111-118
ISSN
  • 1534-4320 (ISSN-L)
  • 1558-0210
OpenAlex
W2125585124
Cited by
438
References
4
Citations by year
2026: 27 · 2025: 26 · 2024: 30 · 2023: 33 · 2022: 30 · 2021: 40 · 2020: 32 · 2019: 35 · 2018: 32 · 2017: 31 · 2016: 14 · 2015: 19 · 2014: 29 · 2013: 10 · 2012: 11
FWCI
5.74
Type
journal article
Language
en
Open access
Locations
  • IEEE Transactions on Neural Systems and Rehabilitation Engineering (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Biomedical Imaging and Bioengineering (R01EB001672, 1 R01EB01672-01)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Physical Sciences › Engineering › Biomedical Engineering › Prosthetics and Rehabilitation Robotics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
Keywords
myoelectric prosthesis, EMG signal processing, Box and Block Test, phaB, EMG signal classification
MeSH terms
Artificial Limbs, Electric Stimulation Therapy, Feedback, Hand, Humans, Prosthesis Design, Therapy, Computer-Assisted, Muscle, Skeletal, Hand Strength, Equipment Failure Analysis

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