Journal of the Society of Biomechanisms
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Volume 26, Issue 2
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  • A basic research of differential diagnostic system using AR model for pathological tremors
    Kiyoshi OKADA, Shima HANDO, Ichiro FUKUMOTO
    Article type: Article
    2002 Volume 26 Issue 2 Pages 97-106
    Published: May 01, 2002
    Released on J-STAGE: November 01, 2016
    DOIhttps://doi.org/10.3951/sobim.26.97
    JOURNAL FREE ACCESS
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    The usefulness of analysis of acceleration data using an autoregressive (AR) model for differential diagnosis of Parkinson's disease and other diseases with tremors was investigated. The order of the AR model used in this study was 7, in accordance with Akaike's final prediction error criterion, The subjects were 18 patients with Parkinson's disease, 20 patients with essential tremor, and 13 healthy old people as a control group. The results of analysis showed that the sign of the characteristic root that exists on the real axis of a complex plane and the frequency band width at basic resonant frequency of the tremor in the dominant forearm are useful parameters for distinguishing pathological tremors from physiological tremors. The variance of the frequency band width was found to be a useful parameter for differentiating patients in the Parkinson's disease patient group and essential tremor patient group.
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