Figure 4.

Power spectrum whitening by the fractional leaky integrate-and-fire (LIF) circuit. (A–C) Power spectrum of the firing rate (o), with power-law exponent of the fit (${\eta }_{\mathit{LIF}}$) and the power-spectrum of the pink-noise input signal (solid black) characterized by its exponent,$\beta$. (D) Value of ${\mathrm{\Delta }\eta }_{\mathit{LIF}}={\eta }_{\mathit{LIF}}-\beta$ as a function of $\beta$. Error bars correspond to SEM.