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. 2015 Jul 31;10(7):e0133971. doi: 10.1371/journal.pone.0133971

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© 2015 Jiang et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 2 — a-c: Dynamic changes in the time-domain analysis of HRV during three days of 6-OHDA injections. d-g. Dynamic changes in the frequency-domain analysis of HRV during three days of 6-OHDA injections. The parameters of frequency-domain analysis for HRV (LF, HF, and TP) were transformed by calculating their natural logarithms.* P<0.05,** P<0.01 vs. NC group. +P<0.05, ++P<0.01 vs. SC group.