A Robust and Sensitive Metric for Quantifying Movement Smoothness

  title={A Robust and Sensitive Metric for Quantifying Movement Smoothness},
  author={Sivakumar Balasubramanian and Alejandro Melendez-Calderon and Etienne Burdet},
  journal={IEEE Transactions on Biomedical Engineering},
The need for movement smoothness quantification to assess motor learning and recovery has resulted in various measures that look at different aspects of a movement's profile. This paper first shows that most of the previously published smoothness measures lack validity, consistency, sensitivity, or robustness. It then introduces and evaluates the spectral arc-length metric that uses a movement speed profile's Fourier magnitude spectrum to quantify movement smoothness. This new metric is… CONTINUE READING
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