Statistical analysis of RR and PR ECG intervals
| Conditions | RR/PR | ||||
| Girk4−/−NaCl | WTAtrop | Girk4−/−Atrop | WTProp | Girk4−/−Prop | |
| WTNaCl | NS/NS | <0.05/NS | <0.01/<0.05 | <0.01/NS | <0.001/NS |
| Girk4−/−NaCl | NS/NS | <0.05/NS | <0.001/NS | <0.001/<0.01 | |
| WTAtrop | NS/NS | <0.001/<0.01 | <0.001/<0.001 | ||
| Girk4−/−Atrop | <0.001/<0.001 | <0.001/<0.001 | |||
| WTProp | NS/NS | ||||
| Conditions | RR/PR | ||||
| Girk4−/−NaCl | WTAtrop | Girk4−/−Atrop | WTProp | Girk4−/−Prop | |
| WTNaCl | NS/NS | <0.05/NS | <0.01/<0.05 | <0.01/NS | <0.001/NS |
| Girk4−/−NaCl | NS/NS | <0.05/NS | <0.001/NS | <0.001/<0.01 | |
| WTAtrop | NS/NS | <0.001/<0.01 | <0.001/<0.001 | ||
| Girk4−/−Atrop | <0.001/<0.001 | <0.001/<0.001 | |||
| WTProp | NS/NS | ||||
Atrop, atropine; Prop, propranolol. ECG interval values in WT and Girk4−/− mice under control conditions (intraperitoneal injection of NaCl) or after systemic administration of 0.5 mg/kg atropine or 5 mg/kg propranolol are shown.