Fig. 1. HR and HR variability for a 32-year-old Zen nun during pre-Zazen rest. Top, HR. Bottom, Spectral power. BPM = beats/min; HF = high frequency; LF = low frequency; IHR = instantaneous heart rate.
Fig. 1. HR and HR variability for a 32-year-old Zen nun during pre-Zazen rest. Top, HR. Bottom, Spectral power. BPM = beats/min; HF = high frequency; LF = low frequency; IHR = instantaneous heart rate.