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Moment stability analysis of linear stochastic human controller model in visuomotor tracking task

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Abstract

We investigate the stability limits of linear stochastic human controller model. In our previous study, we had proposed a model by which the probability distributions of human visuomotor tracking data can be accurately reproduced. In this study, we conduct a stochastic analysis on our model by deriving a system of moment differential equations with respect to random state variables of this model. We evaluate the stability limits of our model by detecting zero-eigenvalue conditions of the Jacobian matrix of the moment differential equations. The resulting stability limits make it possible to characterize the human parameter values that were experimentally identified from the human participants in our previous study; this shows that during the visuomotor tracking experiments, the human participants generated huge fluctuations far from the stability limits while applying almost neutrally stable proportional gain.

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Authors and Affiliations

  1. Department of Innovation Systems Engineering, Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi, 321-8585, Japan

    Shigeki Matsumoto

  2. Department of Mechanical and Intelligent Engineering, Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi, 321-8585, Japan

    Masayori Maruya & Katsutoshi Yoshida

Authors
  1. Shigeki Matsumoto
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  2. Masayori Maruya
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  3. Katsutoshi Yoshida
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Correspondence to Katsutoshi Yoshida.

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Matsumoto, S., Maruya, M. & Yoshida, K. Moment stability analysis of linear stochastic human controller model in visuomotor tracking task. Artif Life Robotics 23, 34–40 (2018). https://doi.org/10.1007/s10015-017-0405-y

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  • DOI: https://doi.org/10.1007/s10015-017-0405-y

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