Table 5.
Summary of data showing the effect of the number of gj-channels on the length constant (λ) and on overall propagation velocity (θov) in the single linear chain of 100 myocardial cells
| No. of gj-channels | λ (μm) | θov (cm/sec) | ||
| A | 300 | 17.3 | 150 | 358 |
| B | 1000 | 31.6 | 270 | 874 |
| C | 3000 | 54.8 | 440 | 1850 |
| Ratios | ||||
| C/A | 10.0 | 3.17 | 2.93 | 5.17 |
| C/B | 3.00 | 1.73 | 1.63 | 2.12 |
| B/A | 3.33 | 1.82 | 1.80 | 2.44 |
N = Number of gj-channels.
The data are given for only those 3 cases in which there was an exponential decay of potential as a function of distance.
Note that the ratios for the effects were always substantially higher for θov than for λ. That is, adding gj-channels had a larger effect on θov than on λ.
Also note that λ varies approximately with the square root of the number of gj-channels.