Abstract
Objective
To evaluate the effects of adding vibrotactile feedback (VTF) in myoelectric prosthesis
users during performance of a functional task when visual feedback is disturbed.
Design
A repeated-measures design with a counter-balanced order of 3 conditions.
Setting
Laboratory setting.
Participants
Transradial amputees using a myoelectric prosthesis with normal or corrected eyesight
(N=12, median age 65±13y). Exclusion criteria were orthopedic or neurologic problems.
Interventions
All participants performed the modified Box and Blocks Test, grasping and manipulating
16 blocks over a partition using their myoelectric prosthesis. This was performed
3 times: in full light, in a dark room without VTF, and in a dark room with VTF.
Main Outcome Measures
Performance time, that is, the time needed to transfer 1 block, and accuracy during
performance, measured by number of empty grips, empty transitions with no block and
block drops from the hand.
Results
Significant differences were found in all outcome measures when VTF was added, with
improved performance time (4.2 vs 5.3s) and a reduced number of grasping errors (3.0
vs 6.5 empty grips, 1.5 vs 4 empty transitions, 2.0 vs 4.5 block drops).
Conclusions
Adding VTF to myoelectric prosthesis users has positive effects on performance time
and accuracy when visual feedback is disturbed.
Keywords
List of abbreviations:
VTF (vibrotactile feedback)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: June 20, 2018
Footnotes
Clinical Trial Registration No.: NCT02749643.
Disclosures: none.
Identification
Copyright
© 2018 by the American Congress of Rehabilitation Medicine
