TABLE 1.
Standard deviation of heartbeat intervals (SDNN) values (median [IQR]) and statistical results for baseline–stimulation comparisons.
| Experiment | Condition | n | Baseline median (IQR) | Stimulation median (IQR) | P-value | χ2 (df = 1) | Effect size r | Interpretation |
|---|---|---|---|---|---|---|---|---|
| Exp. 1 | Burst cymba | 15 | 75 (40–90) | 80 (60–100) | 0.035 | 3.38 | 0.475 | Medium |
| Exp. 1 | Slow cymba | 15 | 80 (65–95) | 85 (70–110) | 0.048 | 3.05 | 0.451 | Medium |
| Exp. 1 | Fast cymba | 15 | 70 (45–90) | 70 (55–95) | 0.207 | 0.66 | 0.210 | Small |
| Exp. 1 | Burst earlobe | 15 | 70 (55–95) | 80 (60–100) | 0.002 | 9.55 | 0.798 | Large |
| Exp. 2 | Burst cymba | 21 | 75 (55–90) | 85 (60–110) | 0.016 | 5.78 | 0.525 | Large |
| Exp. 2 | Burst fossa | 21 | 65 (45–80) | 70 (55–90) | 0.380 | 0.25 | 0.109 | Small |
| Exp. 2 | Burst tragus | 21 | 75 (60–95) | 85 (65–105) | 0.469 | 0.14 | 0.082 | Small |
| Exp. 2 | Burst earlobe | 21 | 70 (55–90) | 80 (60–100) | 0.042 | 3.26 | 0.394 | Medium |