Role of Parameters of Gaussian–Rectification Model

<p>The standard deviation of potential was set to σ = 1, so that the shape of the curves relating firing-rate variance to firing-rate mean depends entirely on the gain <i>k</i> and the exponent <i>n</i> of the curves relating firing rate to membrane potential. The effects of these two parameters are explored: varying <i>n</i> (columns) and varying <i>k</i> (rows). Red curves: predictions of the Gaussian–rectification model; shaded areas: regions where the model predicts the occurrence of 75% of the points. Insets illustrate the corresponding curves relating firing rate to membrane potential.