| 4-AP | 4-aminopyridine |
| AF | Atrial fibrillation |
| AP | Action potential |
| APA | Action potential amplitude |
| APD | Action potential duration |
| APD20 | Action potential duration at 20% repolarisation |
| APD50 | Action potential duration at 50% repolarisation |
| APD90 | Action potential duration at 90% repolarisation |
| CTRL | Control |
| CV | Coefficient of variation |
| EK | Potassium equilibrium potential |
| hESC-CM | Human embryonic stem cell-derived cardiomyocyte |
| HEK-293 | Human embryonic kidney 293 |
| hiPSC | Human induced pluripotent stem cell |
| hiPSC-CM | Human induced pluripotent stem cell-derived cardiomyocyte |
| ICa,L | L-type calcium current |
| If | Hyperpolarisation-activated cyclic nucleotide-gated funny current |
| IK,ACh | Acetylcholine-activated potassium current |
| IK1 | Inward rectifier potassium current |
| IKur | Ultrarapid delayed rectifier potassium current |
| Ito1 | Transient outward potassium current |
| INa | Fast sodium current |
| Kir2.1 | Inward rectifier potassium channel subfamily 2 member 1 |
| MDP | Maximum diastolic potential |
| MEA | Multi-electrode array |
| RA | All-trans retinoic acid |
| RMP | Resting membrane potential |
| RT-Linux | Real-Time Linux |
| Vm | Membrane potential |
| Vmax | Maximum upstroke velocity |
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