Figure 1
From: Evaluation of parameters for fetal behavioural state classification
Box and whiskers plots of the HRV parameters in the four defined states. Depicted are the median (central mark), and the 25th and 75th percentile (bottom and top edges of the box, respectively). (a) Heart rate in beats per minute (bpm). (b) Standard deviation of normal to normal R-R intervals, in milliseconds (ms). (c) Root mean square of successive differences between normal heartbeats, in milliseconds (ms).
