Table 1. Means and standard deviations of physiological measures during baseline and cry phases.
| Condition | ||||
|---|---|---|---|---|
| Measure | Phase | Neutral | Smile | All participants |
| BVP (μV) | Baseline | 42.12 (14.72) | 58.75 (18.51) | 50.43 (18.45) |
| Cry | 37.89 (11.17) | 48.01 (9.10) | 42.95 (11.24) | |
| HR (bpm) | Baseline | 71.87 (6.92) | 70.63 (7.52) | 71.25 (7.13) |
| Cry | 70.17 (6.39) | 69.76 (7.19) | 69.97 (6.68) | |
| RSP (B/Min.) | Baseline | 17.22 (3.70) | 16.30 (3.51) | 16.76 (3.57) |
| Cry | 18.79 (3.21) | 18.98 (2.55) | 18.88 (2.85) | |
| SC (log(μS+1)) | Baseline | 0.38 (0.17) | 0.33 (0.20) | 0.36 (0.18) |
| Cry | 0.45 (0.20) | 0.47 (0.26) | 0.46 (0.22) | |
BVPa: Blood volume pulse amplitude (μV), HR: Heart rate (bpm: beats per minute), SC: Skin conductance response (log (μS+1)), RSP: Respiration rate (B/Min: breaths per minute). Standard deviations in parentheses.