Figure 7
From: Is there evidence of fetal-maternal heart rate synchronization?
Determination of the phase of synchronization epochs. Synchrogram of a real data set obtained in the 26th week of gestation. The identified SE are marked by the black points. The histogram at the right indicates the distribution of the phases φ mat of all synchronization epochs (SE) found in this data set. Note the bias for specific phases of the maternal RR interval.