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Updated: Feb 8, 2026

A Vibrotactile Feedback Device for Seated Balance Assessment and Training
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Myoelectric Prosthesis Users Improve Performance Time and Accuracy Using Vibrotactile Feedback When Visual Feedback

Eitan Raveh1, Sigal Portnoy1, Jason Friedman2

  • 1Occupational Therapy Department, School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel.

Archives of Physical Medicine and Rehabilitation
|June 24, 2018
PubMed
Summary

Adding vibrotactile feedback (VTF) to myoelectric prosthesis use improves functional task performance. This enhancement is particularly noticeable when visual feedback is limited, leading to faster task completion and fewer errors.

Keywords:
AmputationProsthesisRehabilitationSensory feedbackVisual feedback

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Area of Science:

  • Rehabilitation Engineering
  • Human-Computer Interaction
  • Prosthetics and Orthotics

Background:

  • Myoelectric prostheses aim to restore function for amputees.
  • Visual feedback is crucial for controlling prosthetic devices.
  • Disturbed visual feedback can significantly impair prosthesis use.

Purpose of the Study:

  • To investigate the impact of vibrotactile feedback (VTF) on myoelectric prosthesis users.
  • To assess performance during a functional task with compromised visual input.

Main Methods:

  • A repeated-measures design was employed with 12 transradial amputees.
  • Participants performed the Box and Blocks Test under three conditions: full light, dark without VTF, and dark with VTF.
  • Performance time and accuracy (grip errors, drops) were measured.

Main Results:

  • Adding VTF significantly improved performance time (4.2s with VTF vs. 5.3s without).
  • VTF reduced grasping errors, including empty grips (3.0 vs. 6.5), empty transitions (1.5 vs. 4), and block drops (2.0 vs. 4.5).

Conclusions:

  • Vibrotactile feedback enhances myoelectric prosthesis functionality.
  • VTF is beneficial for users when visual feedback is disturbed, improving both speed and accuracy.