Table 1. Parameter values used throughout the study.
Name | Symbol | Value |
---|---|---|
Network model | ||
Number of neurons | N | 50,000 |
Membrane capacitance | C | 200 pF |
Leak conductance | gL | 10 nS |
Leak reversal potential | EL | −65 mV |
Threshold slope factor | ΔT | 1.5 mV |
Threshold voltage | VT | −50 mV |
Spike voltage | Vs | −40 mV |
Reset voltage | Vr | −70 mV |
Subthreshold adaptation conductance1 | a | 4 nS |
Spike-triggered adaptation increment1 | b | 40 pA |
Adaptation reversal potential | Ew | −80 mV |
Adaptation time constant | τw | 200 ms |
Refractory period2 | Tref | 0 ms |
Gaussian filter width for external input | σt | 1 ms |
Discretization time step | Δt | 0.05 ms |
Spike rate estimation bin width | ΔT | 1 ms |
Fokker-Planck model | ||
Membrane voltage lower bound | Vlb | −200 mV |
Finite-volume membrane voltage spacing | ΔV | 0.028 mV |
Discretization time step | Δt | 0.05 ms |
Low-dimensional models | ||
Discretization time step | Δt | 0.01 ms |
Membrane voltage spacing3 | ΔV | 0.01 mV |
Spacing of mean input3 | Δμ | 0.025 mV/ms |
Spacing of input standard deviation3 | Δσ |
1If not specified otherwise.
2A nonzero refractory period is not supported by the spec2 model.
3Parameters for precalculation of model quantities (before simulation).