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. 2021 Feb 5;11:616062. doi: 10.3389/fneur.2020.616062

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Copyright © 2021 Cavallieri, Budriesi, Gessani, Contardi, Fioravanti, Menozzi, Pinto, Moro, Valzania and Antonelli.

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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Correlation between intensity and location of LID and acoustic speech parameters. (A) Significant positive correlation between Clinical Dyskinesia Rating Scale (CDRS) total score (x-axis) and shimmer local DB (y-axis) in the ON condition. (B) Significant positive correlation between axial CDRS subscore (x-axis) and noise-to-harmonics ratio (y-axis) in the ON condition. (C) Statistically positive correlation between axial CDRS subscore (x-axis) and shimmer local DB (y-axis) in the ON condition. These results highlight that patients with higher intensity of levodopa-induced dyskinesia, particularly in the axial region, had a poorer voice quality.