2 (done with RK45) leaky integrate-and-fire neuron (LIAF) quadratic integrate-and-fire neuron (QIAF) the conductance-based Connor-Stevens neuron exponential integrate-and-fire neuron (EIAF) rate-based MT neuron (DivInE model) 3 Gain function LIAF, QIAF, and EIAF Gain function Connor-Stevens neuron Gain function rate-based MT neuron (DivInE model) Gain function LIAF analytically 5 Slope LIAF, QIAF, and EIAF Slope Connor-Stevens neuron Slope rate-based MT neuron (DivInE model)