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Table 2 Summary of Total Propagation Time (TPT) and Velocity (θ) for Various combinations of longitudinal and transverse gap-junction channels in the 10 × 10 model for cardiac muscle.

From: Effect of transverse gap-junction channels on transverse propagation in an enlarged PSpice model of cardiac muscle

No. of channels

TPT

#Apparent Transv. velocity

##Overall velocity

Sequence of firing (Percent in order)

Longit.

Transv.

(ms)

(cm/sec)

(cm/sec)

 

0

0

17.5

0.82

84.9

23

0

10

17.6

0.82

84.4

13

0

100

17.8

0.81

83.4

13

0

1000

17.5

0.82

84.9

13

10

0

14.8

0.97

100

47

10

10

14.5

0.99

102

60

10

100

14.4

1.00

103

63

10

1000

14.4

1.00

103

63

100

0

16.3

0.88

91.1

100

100

10

12.1

1.19

123

100

100

100

8.7

1.66

171

100

100

1000

8.2

1.76

181

100

1000

0

16.8

0.86

88.4

100

1000

10

7.6

1.89

195

100

1000

100

3.0

4.80

495

100

1000

1000

1.9

7.58

782

100

  1. # Apparent transverse velocity was calculated from the TPT assuming a cell diameter of 16 μm.
  2. Velocity (θ) = (16 μm/junction) × (9 junctions transversely)/TPT
  3. ## Overall velocity was calculated from the TPT assuming a cell length of 150 μm.
  4. Velocity (θ) = (150 μm/junction) × (99 junctions)/TPT