Cable properties and propagation velocity in a long single chain of simulated myocardial cells

Table 5 Summary of data showing the effect of the number of gj-channels on the length constant (λ) and on overall propagation velocity (θ_ov) in the single linear chain of 100 myocardial cells

	No. of gj-channels	$\sqrt{N}$	λ(μm)	θ_ov(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 θ_ov than for λ. That is, adding gj-channels had a larger effect on θ_ov than on λ.
Also note that λ varies approximately with the square root of the number of gj-channels.

ISSN: 1742-4682