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Surface EMG and acceleration signals in Parkinson’s disease: feature extraction and cluster analysis

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Abstract

We present an advanced method for feature extraction and cluster analysis of surface electromyograms (EMG) and acceleration signals in Parkinson’s disease (PD). In the method, 12 different EMG and acceleration signal features are extracted and used to form high-dimensional feature vectors. The dimensionality of these vectors is then reduced by using the principal component approach. Finally, the cluster analysis of feature vectors is performed in a low-dimensional eigenspace. The method was tested with EMG and acceleration data of 42 patients with PD and 59 healthy controls. The obtained discrimination between patients and controls was promising. According to clustering results, one cluster contained 90% of the healthy controls and two other clusters 76% of the patients. Seven patients with severe motor dysfunctions were distinguished in one of the patient clusters. In the future, the clinical value of the method should be further evaluated.

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Authors and Affiliations

  1. Department of Physics, University of Kuopio, P.O.Box 1627, 70211, Kuopio, Finland

    Saara M. Rissanen, Mika P. Tarvainen & Pasi A. Karjalainen

  2. Department of Physical and Rehabilitation Medicine, Kuopio University Hospital, Kuopio, Finland

    Saara M. Rissanen, Markku Kankaanpää & Olavi Airaksinen

  3. Petrozavodsk State University, Petrozavodsk, Russia

    Alexander Meigal

  4. Department of Neurology, Kuopio University Hospital, Kuopio, Finland

    Juho Nuutinen

  5. Brain Research and Rehabilitation Center Neuron, Kuopio, Finland

    Ina M. Tarkka

Authors
  1. Saara M. Rissanen
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  2. Markku Kankaanpää
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  3. Alexander Meigal
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  4. Mika P. Tarvainen
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  5. Juho Nuutinen
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  6. Ina M. Tarkka
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  7. Olavi Airaksinen
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  8. Pasi A. Karjalainen
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Corresponding author

Correspondence to Saara M. Rissanen.

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Rissanen, S.M., Kankaanpää, M., Meigal, A. et al. Surface EMG and acceleration signals in Parkinson’s disease: feature extraction and cluster analysis. Med Biol Eng Comput 46, 849–858 (2008). https://doi.org/10.1007/s11517-008-0369-0

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  • DOI: https://doi.org/10.1007/s11517-008-0369-0

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