Figure 5
Changes in SD 1, SD 2 and CCM values for all phases. SD 1 R , SD 2 R and CCM R is the change between original and surrogated values of SD 1, SD 2 and CCM (given by number of original Mean). RR interval signal of each subject for four different phases was randomly shuffled 30 times then SD 1, SD 2 and CCM was calculated each time. Mean of each descriptor (SD 1, SD 2 and CCM) of these 30 data sets was compared to value of corresponding descriptor (SD 1, SD 2 and CCM) of originally ordered RR interval signal.