Decoding of individuated finger movements using surface EMG and input optimization applying a genetic algorithm.

Gunter Kanitz, Christian Antfolk, Christian Cipriani, Fredrik Sebelius, Maria Chiara Carrozza

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

In this paper we present surface electromyographic (EMG) data collected from 16 channels on five unimpaired subjects and one transradial amputee performing 12 individual finger movements and a rest class. EMG were processed using a traditional Time Domain feature-set and classifiers: a Linear Discriminant Analysis (LDA) a k-Nearest Neighbors (k-NN) and Support Vector Machine (SVM). Using continuous datasets we show that it is possible to achieve an accuracy up to 80% across subjects. Thereafter possibilities to reduce the numbers of channels physically required, as well as the number of features have been investigated by means of a developed Genetic Algorithm (GA) that included a bonus system to reward eliminated features and channels. The classification was performed firstly on the full datasets and in later runs using the GA. The GA demonstrated high redundancy in the recorded 16 channel data as well as the insignificance of certain features. Although the GA optimization yielded to reduce 8 to 11 channels depending on the subject, such reduction had little to no effect on the classification accuracies.
Original languageEnglish
Title of host publication[Host publication title missing]
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages1608-1611
ISBN (Print)978-1-4244-4121-1
DOIs
Publication statusPublished - 2011
Event2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Boston, MA
Duration: 2011 Aug 302011 Sept 3

Publication series

Name
ISSN (Print)1557-170X

Conference

Conference2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Period2011/08/302011/09/03

Subject classification (UKÄ)

  • Medical Engineering

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