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. 2021 Jun 23;11:13123. doi: 10.1038/s41598-021-92250-8

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Reflexive responses. Average reflexive responses to voice fundamental frequency (f_o) in cents are shown for the control group (light blue line) and hyperfunctional voice disorder (HVD) group (dark purple line) for the shift-up (panel a) and shift-down (panel b) conditions. The shaded regions in each panel indicates the group means + / − standard deviation for both the control group (light blue shading) and HVD group (dark purple shading). The grey highlighted columns show the time interval used for analysis.