Research Article

Auricular Acupuncture at the “Shenmen” and “Point Zero” Points Induced Parasympathetic Activation

Figure 2

Time course of change in low frequency (LF)/high frequency (HF) ratio of heart rate variability. Horizontal bars represent medians, boxes represent the 25th and 75th percentile ranges, and T bars represent the 5th and 95th percentile ranges. *Different from 23 : 00 ( ). #Different from the acupuncture group ( ).
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