Echocardiography: Time registrations of echocardiographic (EC) events a'-h' related to ECG in nine healthy adults (study M4). Events a' and b' are related to the starting point of the p-wave, and c' through h' are related to the initial point of the q-wave in the ECG.
| EC events | ECG intervals | |||||||||
| Person No. | a' | b' | c' | d' | e' | f' | g' | h' | P-Q | R-R |
| 1 | 3.5 | 9.0 | 12.0 | 15.0 | 16.5 | 30.0 | 39.0 | 8.0 | 52 | |
| 2 | 4.5 | 9.5 | 13.0 | 13.0 | 17.0 | 29.5 | 40.0 | 45.0 | 8.0 | 57 |
| 3 | 4.0 | 10.0 | 12.5 | 13.5 | 17.5 | 28.5 | 39.5 | 7.0 | 41 | |
| 4 | 4.5 | 10.0 | 12.5 | 14.0 | 16.0 | 29.0 | 39.0 | 45.0 | 7.5 | 48 |
| 5 | 4.0 | 9.5 | 13.5 | 14.5 | 17.5 | 29.0 | 40.5 | 45.0 | 7.0 | 55 |
| 6 | 4.0 | 10.0 | 12.5 | 12.5 | 16.0 | 30.0 | 41.5 | 8.0 | 47 | |
| 7 | 4.0 | 9.0 | 12.0 | 12.0 | 17.0 | 30.5 | 41.5 | 7.5 | 48 | |
| 8 | 3.5 | 8.5 | 12.5 | 15.0 | 17.5 | 28.0 | 38.0 | 43.0 | 7.0 | 45 |
| 9 | 3.0 | 9.0 | 11.5 | 11.5 | 16.5 | 28.5 | 41.5 | 48.5 | 8.0 | 47 |
| m | 3.9 | 9.4 | 12.4 | 13.4 | 16.8 | 29.2 | 40.1 | 45.3 | 7.6 | |
| +/- I | 0.4 | 0.4 | 0.5 | 1.0 | 0.5 | 0.7 | 1.0 | 2.8 | 0.4 | |