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. 2015 Jun 12;12:52. doi: 10.1186/s12984-015-0045-1

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© Lunardini et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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 — EMG-Kinematics Spectral Analysis. Panel a: Control subject (c2); Panel b: Subject with dystonia (d2). For each panel, from top to bottom: Tablet y-trajectory, Tablet x-trajectory, Triceps Brachii (TRIC) and Posterior Deltoid (PD) EMGs and non-linear envelopes (Filt) in a sequence of ten figure-eight movements represented in time (left column) and frequency (right column) domains. Note that Filt signals are normalized and dimensionless both in time and frequency domains (n.u.). f_y and f_x represent the subject-specific frequencies related to the vertical and horizontal components of the figure-eight