| ANOVA | analysis of variance |
| DTDP | 4,4′-dithiodipyridine |
| erg | ether-à-go-go-related gene |
| I–V | current versus voltage |
| IC50 | the concentration required for half-maximal inhibition |
| I K(DR) | delayed-rectifier K+ current |
| I K(erg) | erg-mediated K+ current |
| I Na | voltage-gated Na+ current |
| isoPLB | isoplumbagin |
| KATP channel | ATP-dependent K+ channel |
| K D | dissociation constant |
| Kerg channel | erg-mediated K+ channel |
| KV channel | voltage-gated K+ channel |
| PLB | plumbagin |
| SEM | standard error of mean |
| τdeact | deactivation time constant |
| Vhys | voltage-dependent hysteresis |
| Vramp | ramp voltage |
| TEA | tetraethylammonium chloride |
| TTX | tetrodotoxin |
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