Time-Domain Analysis
摘要
Heart rate variability can be analyzed by several methods, being time-domain methods the simplest measures that can be obtained from RR interval series. Numerical indices summarizing the variability of the series are calculated from the RR interval series. These measures are easily implemented and have low computational cost. They are usually calculated over longer segments of data than frequency-domain methods, typically 24 h. However, they can be also estimated from smaller segments (typically 5 min) in order to compare different episodes. In this chapter, a review of time-domain measures and their calculation within RHRV will be shown.