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. 2017 Sep 29;7:12425. doi: 10.1038/s41598-017-09635-x

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© The Author(s) 2017

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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(A) Changes in the low frequency/high frequency (LF/HF) band ratio in response to intravenous CRH. (a) Males in the control group versus males in the IBS group. (b) Females in the control group versus females in the IBS group. (B) Changes in the high frequency (HF) band in response to intravenous CRH. (a) Males in the control group versus males in the IBS group. (b) Females in the control group versus females in the IBS group. Abbreviations: CRH, corticotropin-releasing hormone; HF, percent high frequency band power; IBS, irritable bowel syndrome; LF, percent low frequency band power.