EFFECT OF SURFACE ELECTRODE ORIENTATION ON INDEPENDENT COMPONENT ANALYSIS FOR FEATURE EXTRACTION OF SURFACE MOTOR UNIT ACTION POTENTIAL

Jun Akazawa, Takaharu Ikeuchi, Takemasa Okamoto, Ryuhei Okuno, Masaki Yoshida, Tetsuo Sato, Kotaro Minato

Abstract

Recently, application of Independent Component Analysis (ICA) has been reported for effective decomposi-tion of surface electromyogram (SEMG) signals into a train of surface motor unit action potentials (SMUAPs) of a single motor unit (MU). Results of ICA were not always sufficient as the feature extraction of SMUAP at first dorsal interosseous muscle (FDI). The purpose of this study is to propose an effective method for feature extraction of SMUAP by simulation study of focusing on the effects of electrode orientation. SEMG signals were created with the model and application of ICA was applied to the signals. The present study showed that the useful and actual method of ICA application was to repeat measurement of SEMG signals with varying the electrode orientation, and then to select the better signals for the feature extraction by executing ICA algorithm.

References

  1. Xu, Z., Xiao, S., and Chi, Z.: ART2 neural network for surface EMG decomposition, Neural Computing & Applications, vol. 10(1), (2001) 29-38.
  2. Bonato, P., Erim, Z., and Gonzalez-Cueto, J.: Decomposition of superimposed waveforms using the cross time frequency transform, Proc. 23rd Ann. Int. Conf. IEEE EMBS, Istanbul, (2001).
  3. Hyvarinen, A., Karhunen, J., and Oja, E.: Independent component analysis, Hoboken: John Wiley and Sons, The publishing company. London, 2nd edition, (2001).
  4. Maekawa, S., Arimoto, T., Kotani, M., and Fujiwara, Y.: Motor unit decomposition of surface EMG using multichannel blind deconvolution, Proc. XIVth Congress of ISEK, Vienna, (2002) 38-39.
  5. Nakamura, H., Yoshida, M., Kotani, M., Akazawa, K., and Moritani, T.: The application of independent component analysis to the multi-channel surface electromyographic signals for separation of motor unit action potential trains: part I-measuring techniques, J Electromyogr Kinesiol., vol. 14, (2004) 423-432.
  6. Gonzalo, A., Okuno, R., and Akazawa, K.: A decomposition algorithm for surface electrode-array electromyograms, IEEE Engineering in Medicine and Biology Magazine, vol. 24(4), (2005) 63-72.
  7. Griep, P., Gielen, F., Boom, H., Boon, K., Hoogstraten, L., Pool, C., and Wallinga-De-Jonge, W.: Calculation and registration of the same motor unit action potential”, EEG and Clinical Neurophysiol., vol. 53, (1982) 388- 404.
  8. Disselhorst-klug, C., Silny, J., and Rau, G.: Estimation of the relationship between the noninvasively detected activity of single motor units and their characteristic pathological changes by modeling, J Electromyogr Kinesiol., vol. 8, (1998) 323-335.
  9. Akazawa, J., Sato, T., Minato, K., and Yoshida, M.: Method of estimating location and territory of motor units in human first dorsal interosseous muscle with multichannel surface electromyograms, JSMBE, vol. 43(4), (2005) 595-604. (in Japanese)
  10. Clamann, HP.: Statistical Analysis of Motor Unit Firing Patterns in a Human Skeletal Muscle, Biophys J., vol. 9(10), (1969) 1233-1251.
  11. Kanosue, K., Yoshida, M., Akazawa K, and Fujii, K.: The number of active. motor units and their firing rates in voluntary contraction of human brachialis muscle, Jpn. J. Physiol., vol. 29, (1979) 427-443.
Download


Paper Citation


in Harvard Style

Akazawa J., Ikeuchi T., Okamoto T., Okuno R., Yoshida M., Sato T. and Minato K. (2009). EFFECT OF SURFACE ELECTRODE ORIENTATION ON INDEPENDENT COMPONENT ANALYSIS FOR FEATURE EXTRACTION OF SURFACE MOTOR UNIT ACTION POTENTIAL . In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009) ISBN 978-989-8111-65-4, pages 421-425. DOI: 10.5220/0001777704210425


in Bibtex Style

@conference{biosignals09,
author={Jun Akazawa and Takaharu Ikeuchi and Takemasa Okamoto and Ryuhei Okuno and Masaki Yoshida and Tetsuo Sato and Kotaro Minato},
title={EFFECT OF SURFACE ELECTRODE ORIENTATION ON INDEPENDENT COMPONENT ANALYSIS FOR FEATURE EXTRACTION OF SURFACE MOTOR UNIT ACTION POTENTIAL},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)},
year={2009},
pages={421-425},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001777704210425},
isbn={978-989-8111-65-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)
TI - EFFECT OF SURFACE ELECTRODE ORIENTATION ON INDEPENDENT COMPONENT ANALYSIS FOR FEATURE EXTRACTION OF SURFACE MOTOR UNIT ACTION POTENTIAL
SN - 978-989-8111-65-4
AU - Akazawa J.
AU - Ikeuchi T.
AU - Okamoto T.
AU - Okuno R.
AU - Yoshida M.
AU - Sato T.
AU - Minato K.
PY - 2009
SP - 421
EP - 425
DO - 10.5220/0001777704210425