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. 2023 Jan 13;6:5. doi: 10.1038/s41746-022-00727-1

Fig. 1. Component smooth function of sound level in GAMM for physiological wellbeing as a bivariate function of SDNN and normalized-HF.

Fig. 1

The solid line indicates how physiological wellbeing varies as a function of sound level, while the dashed lines are confidence intervals.