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CV restitution and discordant alternans on a 1D cable. (A) The black line is the CV restitution curve computed using 
from the Fox model. The dashed line is computed using 
. The thin vertical lines denote the maximum range of DI engaged during rapid pacing at 240 ms. (B) Spatial distribution of Cai alternans for steep (
) and shallow (
) CV restitution. Alternans amplitudes are normalized to the leftmost cell.
