Fig. 6.

Resetting of the spike train in the model neuron occurred because the elevated levels of ADP resulting from the second stimulus inhibit adenosine (ADO) production despite the greater levels of AMP present. A control trace(dashed lines) and reset trace(solid line) are shown superimposed. The vertical dotted lines show when the resetting stimulus was given.1 indicates the time taken for adenosine levels to recover to their pre-reset levels; 2 indicates the extra time taken for adenosine levels to rise high enough to terminate the spike train.