Cell parameters

Every cell in the model belongs to one category. In the internal representation of the cells of the model (which are not explicitely stated by the user, as will be described below) every cell has a set of cell parameters:

duration of phases

the duration of each of the five phases of the action potential of the given cell in the most typical state (i.e. when the pacing rate of external pacemakers is 60/min, and all the external factors are at the basal level); the sum of these durations gives the intrinsic pacing interval of the cell; the last of the intervals must be very large in order to simulate the lack of intrinsic pacing activity for the normal working myocardium.

activation delay

is the time interval between the depolarization of the cell--provided it is not refractory--by a neighbouring cell (the start of the cell's cycle) and the moment in which it becomes able to depolarize its neighbours; the ration between the size unit and the activation delay gives the speed of the depolarisation front in that part of the myocardium;

activation end

is the time interval between the start of the cycle and the moment when the cell ceases to be able to depolarize its neighbours;

refractoriness end

is the moment in the cell's cycle when it ceases to be refractory to external impulses;

afterdepolarization probability

is the probability for the cell to fire again at 75% duration of phase 3.