Figure 5
From: Is there evidence of fetal-maternal heart rate synchronization?
Maternal and fetal magnetocardiogram. Simultaneous maternal and fetal magnetocardiograms recorded in the 36th week of gestation. A) signals in 61 channels, maximum maternal QRS amplitude in the upper channels, maximum fetal QRS amplitude just left of and above the center. B) relative timing of maternal and fetal R peaks in two selected channels: fetal (fR) in channel 7, maternal (mR) in channel 48 (pT, picotesla).