where <math> I(t) </math> are the inputs to the model. The variable <math> \theta </math> lies on the unit circle and ranges between 0 and <math>2\pi\ .</math> When <math> \theta=\pi </math> the neuron "spikes", that is, it produces an [[action potential]]. | where <math> I(t) </math> are the inputs to the model. The variable <math> \theta </math> lies on the unit circle and ranges between 0 and <math>2\pi\ .</math> When <math> \theta=\pi </math> the neuron "spikes", that is, it produces an [[action potential]]. |