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. Author manuscript; available in PMC: 2009 Jun 16.
Published in final edited form as: Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Sep 29;78(3 Pt 1):031925. doi: 10.1103/PhysRevE.78.031925

Figure 1.

Figure 1

(Color online) Space-time voltage plots of complete block (a) and unidirectional block (b) on the second premature wave S3. Horizontal axis is cell number and vertical is time in ms. The 1D fiber is 10 cm long (400 cells 0.025 cm apart). Symmetric block in (a) was induced by launching waves in the mid-span of the fiber (cell 200) so that the propagation is undisturbed by the far boundaries while unidirectional block in (b) was induced by stimulating at cell 340 so that the right boundary at cell 400 (1.5 cm to the right of the stimulus) was in the vicinity. The ionic model was the 3V-SIM and the range of normalized voltage values, (0,1.3), was rescaled to (−100, 100). The interstimulus intervals were determined from the effective refractory period (ERP) of the previous wave: (ERPS1+1 ms, ERPS2+6 ms) for (S2, S3).