Table 1.
Action potential (AP) and afterdepolarization potential (ADP) properties
| AP | |||
|---|---|---|---|
| Control | Ni2+ | ADP | |
| Trigger (pA) | 248 ± 35 (6) | 260 ± 52 (6) | |
| Threshold (mV) | −31.10 ± 2.24 (7) | −31.17 ± 2.87 (7) | |
| Peak value (mV) | 35.3 ± 6.1 (7) | 33.8 ± 8.4 (7) | |
| 10–90% rise time (ms) | 0.35 ± 0.15 (7) | 0.34 ± 0.12 (7) | |
| 10–90% decay time (ms) | 0.83 ± 0.20 (7) | 0.83 ± 0.18 (7) | |
| Half-width (ms) | 1.00 ± 0.28 (7) | 0.98 ± 022 (7) | |
| Amplitude (mV) | 13.8 ± 8.6 (15) | ||
| Half-repolarization (ms) | 13.3 ± 6.4 (13) | ||
All values are given as mean ±s.d. Values in parentheses refer to number of observations. The AP properties before and after Ni2+ application were never significantly different (P always > 0.25).