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. 2020 Apr 9;14:19. doi: 10.3389/fnsys.2020.00019

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Copyright © 2020 Tanaka, Ishikawa, Lee and Kakei.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Changes in movement kinematics of ataxic patients. (A) Delay of the F1 domain of the wrist movement from the target motion. Cross-correlation was calculated by changing the delay δ of the target motion relative to the wrist movement. Controls: Histogram of the optimal delay δ for the control subjects (n = 13). Cerebellar patients: Histogram of the optimal delay δ for the cerebellar patients (n = 19). (B) Comparison of the B_r/K_r ratios for the F1 and F2 components between the controls and the cerebellar patients. Controls: B_r/K_r ratios of the control subjects for the F1 component (top) and the F2 component (bottom; n = 13). Note the highly significant difference between the two components. Cerebellar patients: B_r/K_r ratios of the patients for the F1 (top) and the F2 (bottom) components (n = 19). Note the selective decrease of B_r/K_r ratios for the F1 component in the patients. Adapted from Kakei et al. (2019) under CC-BY license.