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Combining two open source tools for neural computation (BioPatRec and Netlab) improves movement classification for prosthetic control

Cosima Prahm ; Korbinian Eckstein ; Max Jair Ortiz-Catalan (Institutionen för signaler och system, Medicinska signaler och system) ; Georg Dorffner ; Eugenijus Kaniusas ; Oskar C. Aszmann
BMC Research Notes (1756-0500). Vol. 9 (2016), 1, p. -.
[Artikel, refereegranskad vetenskaplig]

Background: Controlling a myoelectric prosthesis for upper limbs is increasingly challenging for the user as more electrodes and joints become available. Motion classification based on pattern recognition with a multi-electrode array allows multiple joints to be controlled simultaneously. Previous pattern recognition studies are difficult to compare, because individual research groups use their own data sets. To resolve this shortcoming and to facilitate comparisons, open access data sets were analysed using components of BioPatRec and Netlab pattern recognition models. Methods: Performances of the artificial neural networks, linear models, and training program components were compared. Evaluation took place within the BioPatRec environment, a Matlab-based open source platform that provides feature extraction, processing and motion classification algorithms for prosthetic control. The algorithms were applied to myoelectric signals for individual and simultaneous classification of movements, with the aim of finding the best performing algorithm and network model. Evaluation criteria included classification accuracy and training time. Results: Results in both the linear and the artificial neural network models demonstrated that Netlab's implementation using scaled conjugate training algorithm reached significantly higher accuracies than BioPatRec. Conclusions: It is concluded that the best movement classification performance would be achieved through integrating Netlab training algorithms in the BioPatRec environment so that future prosthesis training can be shortened and control made more reliable. Netlab was therefore included into the newest release of BioPatRec (v4.0).

Nyckelord: Machine learning, Neural computation, Pattern recognition, Prosthetics, Upper limb amputation



Denna post skapades 2016-12-19. Senast ändrad 2017-04-12.
CPL Pubid: 246261

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Medicinska signaler och system (2005-2017)

Ämnesområden

Medicinteknik

Chalmers infrastruktur