A strategy for mapping biophysical to abstract neuronal network models applied to primary visual cortex
Fig 13
The firing of a population of noisy LIF neurons in response to current step stimulation.
From top to bottom: Current step. Spike raster plot for for 4 neurons. Voltage traces for the 4 neurons. Population firing rate calculated by five models: Monte-Carlo simulation of 4000 individual trials of a noisy LIF neuron, the firing-rate (FR) model based on Eq 2, the firing-rate (FR) model with τFR based on Eq 1, an infinite population of noisy LIF neurons evaluated with the KFP approach (Eqs 53 and 54) and the conductance-based refractory density (CBRD) approach (Eqs 55 and 57). The response of the FR with shunt cell model (not shown) is identical to the current-based FR cell model, since in both cases the transient response is fixed by τFR, and the threshold-linear transfer function of the latter was fit to the steady-state firing rate of the LIF model, that in turn defines the former.