Abstract
Bouwsema H, van der Sluis CK, Bongers RM. Learning to control opening and closing
a myoelectric hand.
Objective
To compare 3 different types of myoelectric signal training.
Design
A cohort analytic study.
Setting
University laboratory.
Participants
Able-bodied right-handed participants (N=34) randomly assigned to 1 of 3 groups.
Interventions
Participants trained hand opening and closing on 3 consecutive days. One group trained
with a virtual myoelectric hand presented on a computer screen, 1 group trained with
an isolated prosthetic hand, and 1 group trained with a prosthetic simulator. One
half of the participants trained with their dominant side, and the other half trained
with their nondominant side. Before and after the training period, a test was administered
to determine the improvement in skill. Participants were asked to open and close the
hand on 3 different velocities at command.
Main Outcome Measures
Peak velocity, mean velocity, and number of peaks in the myoelectric signal of hand
opening and closing.
Results
No differences were found for the different types of training; all participants learned
to control the myoelectric hand. However, differences in learning abilities were revealed.
After learning, a subgroup of the participants could produce clearly distinct myoelectric
signals, which resulted in the ability to open and close the hand at 3 different speeds,
whereas others could not produce distinct myoelectric signals.
Conclusions
Acquired control of a myoelectric hand is irrespective of the type of training. Prosthetic
users may differ in learning capacity; this should be taken into account when choosing
the appropriate type of control for each patient.
Key Words
List of Abbreviations:
ANOVA (analysis of variance), EMG (electromyogram), LED (light-emitting diode), PAULA (Prosthetists' Assistant for Upper Limb Architecture)To read this article in full you will need to make a payment
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Article info
Footnotes
A commercial party having a direct financial interest in the results of the research supporting this article has conferred or will confer a financial benefit on the author or 1 or more of the authors. Research was performed while Hanneke Bouwsema was financially supported by Otto Bock Healthcare GmbH, Vienna, Austria.
Reprints are not available from the author.
Identification
Copyright
© 2010 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
