![](bg5.png)
Anterior View Posterior View
Figure 3: Channels selected by the algorithm for 12
electrodes. Results have been averaged over five cross-
validation loops for the specified amount of channels. Not
all loop iterations have selected the same electrodes, but a
strong bias towards certain prefered channels can be ob-
served (Darker Electrodes).
of channels. The channels that are selected also map
very well to the areas where reinnervation was ex-
pected after surgery for this particular patient. How-
ever, more data from both this patient and additional
patients is needed to further confirm the results. Fu-
ture work will also be directed towards evaluating
these results using online realtime data.
This result is primarily important as an indication
for prosthesis fitting were a smaller number of sur-
face electrodes allows for easier fitting and far simpler
socket construction. A limited number of channels
also reduces hardware requirements and lessens the
computational burden on the myoelectric controller.
ACKNOWLEDGEMENTS
The authors would like to thank Univ.-Prof. Man-
fred Frey, Univ.-Prof. Oskar C. Aszmann, Univ.-Prof.
Tatjana Paternostro-Sluga (Vienna General Hospi-
tal) and physiotherapist Heidelinde Amon-Aspalter
(PhysioLeoben) for providing invaluable assistance
when working with the patient. The authors would
like to thank Dr. Roland Pawlik and Dr. Hubert Eg-
ger for project coordination and Dr. Hans Dietl for
making this research possible.
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