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. 2021 Jan 11;11(1):38. doi: 10.3390/jpm11010038

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Rayleigh’s Z value (ZPLF) and phase-triggered response (PTR) for the resting task for each participant. The bold lines depict ZPLF_all or mean PTR. (a) ZPLF results for the individual participants for the YW method peak condition. (b) ZPLF results for the LMS method peak condition. (c) ZPLF results for the YW trough condition. (d) ZPLF for the LMS trough condition. (e) PTR for the YW peak condition. (f) PTR for the LMS peak condition. (g,h) PTR for the YW and LMS trough conditions, respectively. The red dashed lines in (a–d) shows the critical value of 2.995. ZPLF larger than this critical value is considered to be statistically significant. The black lines in e–h indicate the mean PTR averaged across five participants. The small black square depicts the time-zero.