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Table 4 Measurement of the spread of current in a 100-cell chain containing various numbers of gj-channels

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

 

ΔVm(mV)

Cell Number

Number of gj-channels

 

0

10

30

100

300

1000

3000

47

0

0

0

0

2.3

8.1

12.8

48

0

0

0

0

6.6

14.5

17.6

49

0

0

0

7.4

17.8

26.1

25.9

50

0

8

19.4

38.3

50.4

46.8

36.9

51

298

280

252

200

138 (50.9)

83.0 (30.5)

50.0 (18.4)

52

0

8

19.4

38.3

50.4

46.8

36.9

53

0

0

0

7.4

17.8

26.1

25.9

54

0

0

0

0

6.6

14.5

17.6

55

0

0

0

0

2.3

8.1

12.8

  1. Io (10 nA) was injected in the middle of the chain, namely cell # 51.
  2. Vx = Vo e-x/λ. When x = λ, Vx = Vo 1/e = 0.368 Vo.
  3. Values given in parentheses (cell #51) are the 1/e values (0.368 x Vo).