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Outline of sensing modality and acquired signal.
| Ref | Sensing Modality | Acquired signal |
|---|---|---|
| [7,20,21,22,23] | FECG with/without MECG | Fetal heart rate (FHR) |
| [24] | Seismocardiogram (SCG), Gyrocardiogram (GCG) | Fetal heart rate (FHR) |
| [25,26,27] | Position and Activity | Fetal movement (FM) |
| [4] | Hand Movement | Mother physical activities |
| [28] | Heart Rate Variability (HRV), Heart Rate (HR) | Maternal Stress |
