Figure 1.

Transfer curve of a leaky I&F neuron for three different parameter sets where $u_0=\frac{I}{g_L}$, and $\frac{1}{{\tau }_r}=250$ [Hz] (dashed gray). In this plot, σ_V is varied to produce different ratios $\frac{\theta -u_{\text{rst}}}{{\sigma }_V}$. The three plots above shows that the fit with the sigmoid function (solid black) improves as the ratio decreases.