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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

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

  No. of gj-channels N MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaadaGcaaqaaiabd6eaobWcbeaaaaa@2DEC@ 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
  1. N = Number of gj-channels.
  2. The data are given for only those 3 cases in which there was an exponential decay of potential as a function of distance.
  3. 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.
  4. Also note that λ varies approximately with the square root of the number of gj-channels.