Loading, Plotting, and Filtering RR Intervals
摘要
The initial steps to work with RHRV functions are presented in this chapter. The process starts with the loading of records containing beat positions, which should be preprocessed prior to frequency, time, or nonlinear analysis. Data can be stored in various types of files, and RHRV routines can deal with different data formats. Next, heart rate must be obtained from beat positions. It may occur that spurious points appear in the heart rate signal. RHRV allows users to delete these outliers, when necessary. Besides, the signal can be filtered to reject automatically points that do not correspond to acceptable physiological values.