Hidden Markov multivariate autoregressive (HMM-mAR) modeling framework for surface electromyography (sEMG) data

TitleHidden Markov multivariate autoregressive (HMM-mAR) modeling framework for surface electromyography (sEMG) data
Publication TypeJournal Article
Year of Publication2007
AuthorsChiang, J., Z. Wang, and M. J. McKeown
JournalConf Proc IEEE Eng Med Biol Soc
Volume2007
Pagination4826-9
Abstract

Surface electromyographic (sEMG) analysis is complicated by the fact that the data are inherently non-stationary. To deal with this and to determine muscle activity patterns during reaching movements, we proposed modeling sEMG with a hidden Markov model-multivariate autoregressive (HMM-mAR) framework. The classification between healthy and stroke subjects was performed using structural features extracted from HMM-mAR models. Both the raw and carrier data produced excellent classification performance. The proposed method represents a fundamental departure from most existing methods where only the amplitude is analyzed or the mAR coefficients are directly used for classification. In contrast, our analysis shows that structural features of the multivariate sEMG carrier data or the residuals after model fitting can enhance the classification of reaching movements.

URLhttp://dx.doi.org/10.1109/IEMBS.2007.4353420
DOI10.1109/IEMBS.2007.4353420

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