Fig. 4.
A: bidomain model of transmembrane voltage responses to a stimulus application during repolarization (inset) at one effective cross-fiber (1 X-fiber) space constant (λXF) as measured using the methods for experimental data from the stimulus site, whereas distal from the stimulus (>6 space constants) showed no deviation from normal repolarization. B: after normal repolarization was subtracted, the remaining signal is the response to the stimulus, of which the recovery height (maximum to steady state) is dependent on membrane capacitance (Cm) and tissue conductivities.