714391.fig.005a
(a)
714391.fig.005b
(b)
Figure 5: (a) LF (low frequency)/HF (high frequency) ratio. (b) the LF (low frequency) band of HRV. Note that the median of the LF parameter increases during ear acupressure vibration and during manual ear acupressure in 14 subjects. For further explanation, see Figures 3 and 4.