Abstract
A method to precisely determine the onset of voluntary discrete movements in kinetic signals (e.g. joint angle) is presented. The movement onset is identified as an abrupt change in the (time varying) parameters of a statistical process model. An adaptive Kalman whitening filter transforms the digitized kinetic signal into a sequence of innovations which is examined for possible change-points by a generalized log-likelihood-ratio test. The accuracy of the algorithm is assessed by statistical simulations and compared to the accuracy of a standard threshold criterion. Results show that the method provides accurate change time estimates even for weak and highly variable response profiles.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Staude, G., Wolf, W., Appel, U., Dengler, R.; Methods for onset detection of voluntary motor responses in tremor patients. IEEE Trans. Biomed. Eng., Vol. 43. (1996) 177–88
Staude, G., Dengler, R., Wolf, W.: The discontinuous nature of motor execution I. A model concept for single-muscle multiple-task coordination. Biol. Cybern., Vol. 82. (2000) 23–33
Goodwin, G.C., Sin, K.S.: Adaptive filtering, prediction and control. Prentice-Hall, Englewood Cliffs, New Jersey. (1984)
Basseville, M., ikiforov, I.V.: Detection of abrupt changes: Theory and application. Prentice-Hall, Englewood Cliffs, New Jersey. (1993) 29–43
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Staude, G., Wolf, W. (2000). Change-Point Detection in Kinetic Signals. In: Brause, R.W., Hanisch, E. (eds) Medical Data Analysis. ISMDA 2000. Lecture Notes in Computer Science, vol 1933. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-39949-6_7
Download citation
DOI: https://doi.org/10.1007/3-540-39949-6_7
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-41089-8
Online ISBN: 978-3-540-39949-0
eBook Packages: Springer Book Archive