Cited by 58Muscle activation and electromyography studiesProsthetics and Rehabilitation RoboticsTactile and Sensory Interactions

Multichannel electrotactile feedback for simultaneous and proportional myoelectric control

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Patel, Gauravkumar K, Dosen, Strahinja, Castellini, Claudio, Farina, Dario·2016·Journal of Neural Engineering

Abstract

OBJECTIVE: Closing the loop in myoelectric prostheses by providing artificial somatosensory feedback to the user is an important need for prosthetic users. Previous studies investigated feedback strategies in combination with the control of one degree of freedom of simple grippers. Modern hands, however, are sophisticated multifunction systems. In this study, we assessed multichannel electrotactile feedback integrated with an advanced method for the simultaneous and proportional control of individual fingers of a dexterous hand. APPROACH: The feedback used spatial and frequency coding to provide information on the finger positions (normalized flexion angles). A comprehensive set of conditions have been investigated in 28 able-bodied subjects, including feedback modalities (visual, electrotactile and no feedback), control tasks (fingers and grasps), systems (virtual and real hand), control methods (ideal and realistic) and range of motion (low and high). The task for the subjects was to operate the hand using closed-loop myoelectric control and generate the desired movement (e.g., selected finger or grasp at a specific level of closure). MAIN RESULTS: The subjects could perceive the multichannel and multivariable electrotactile feedback and effectively exploit it to improve the control performance with respect to open-loop grasping. The improvement however depended on the reliability of the feedforward control, with less consistent control exhibiting performance trends that were more complex across the conditions. SIGNIFICANCE: The results are promising for the potential application of advanced feedback to close the control loop in sophisticated prosthetic systems.

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  • Providing tactile stimulations to individual fingers (multiple degrees of freedom) improved control performance by the grasping function compared to open-loop controls.

    “Further, Patel et al. (2016) improved the control performance by the grasping function by providing tactile stimulations to individual fingers (multiple degrees of freedom) in comparison to open-loop controls”

    From Selectivity and Longevity of Peripheral-Nerve and Machine Interfaces: A Review. (2017) · cites this paper as Patel et al. (2016)

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Authors
Patel, G. K., Dosen, S., Castellini, C., & Farina, D.
Affiliations
  • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR) (DE)
  • Universitätsmedizin Göttingen (DE)
Corresponding author
Farina, Dario
Venue
Journal of Neural Engineering
Published
2016-09-13
Volume
13
Issue
5
Pages
056015
ISSN
  • 1741-2552 (ISSN-L)
  • 1741-2560
OpenAlex
W2520034891
Cited by
58
References
43
Citations by year
2026: 2 · 2025: 3 · 2024: 7 · 2023: 7 · 2022: 6 · 2021: 11 · 2020: 7 · 2019: 5 · 2018: 6 · 2017: 4
FWCI
2.41
Type
journal article
Language
en
Open access
Locations
  • Journal of Neural Engineering (publishedVersion)
  • PubMed (publishedVersion)
  • elib (German Aerospace Center) (submittedVersion)
  • GRO (submittedVersion)
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 › Tactile and Sensory Interactions
Keywords
myoelectric prosthesis, electrotactile feedback, somatosensory feedback, feedback control, finger control, proportional control, spatial coding, frequency coding, grasp control, feedforward control, prosthetic hand
MeSH terms
Adult, Electric Stimulation, Electromyography, Female, Fingers, Hand, Humans, Learning, Male, Motor Skills, Psychometrics, Touch, Hand Strength, Prostheses and Implants, Young Adult, Feedback, Sensory

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