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Mean action potential parameters
Em, resting membrane potential.
| Parameter | RGS4+/+ (n = 15) | RGS4−/− (n = 12) | P |
|---|---|---|---|
| Cell capacitance (pF) | 41.6 ± 4.3 | 35.7 ± 3.6 | 0.31 |
| Em (mV) | −69.1 ± 1.7 | −67.2 ± 1.4 | 0.42 |
| Δ (mV) | 133.3 ± 11 | 124 ± 4 | 0.51 |
| APD50 (ms) | 10.4 ± 0.8 | 15.1 ± 2 | 0.03 |
| APD90 (ms) | 67 ± 6.3 | 64.5 ± 4.5 | 0.77 |
| Total (ms) | 126 ± 9.4 | 114 ± 9.3 | 0.38 |
