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. 2006 May 5;91(3):805–815. doi: 10.1529/biophysj.106.080952

FIGURE 1.

FIGURE 1

(A) Schematic illustration of the S1 and S2 beats in a 1D space. S1 is always applied at x = 0, but S2 is applied in location l, which stimulates two opposite propagating waves (the S2 wave and S2* wave). θ is the wavefront velocity and Θ is the waveback velocity. (B) CV versus previous DI for normal (□) and 5-fold slowed (○) Na+ channel recovery, which are fit by Eq. 4 (line). (C) APD versus previous DI. The data are fit by Eq. 7 (solid line). The dashed line is an APD restitution curve by letting α = 0 and β = 0.4 in Eq. 7, which is a shallower APD restitution curve.