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. 2018 Jun 18;15:49. doi: 10.1186/s12984-018-0398-3

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Separation between Controls and PD. a Separation from the harmonic ratio in the medio-lateral direction in the OFF state (accuracy: 79%). From SPARC, b PD in the ON medication state (accuracy: 74%); c PD in the OFF medication state (accuracy: 89%). Gait smoothness in PD decreases sharply in the OFF state. There is a large overlap between the two groups. The horizontal line on each plot is the threshold separating the two groups with the highest accuracy. Note that the horizontal jitter on each plot is meaningless and was added for better visualization