There are five levels of GLIF models with increasing levels of complexity. The most basic model is a simple leaky integrate-and-fire equation. More advanced GLIFs attempt to model variable spike threshold, afterspike currents, and threshold adaptation.
1. Leaky Integrate and Fire (LIF)
Standard circuit representation of a resistor and capacitor in parallel with a leaky membrane.
LIF with biologically-derived threshold and voltage reset rules in addition to a biologically derived threshold decay.
LIF with spike-induced currents to model long-term effects of voltage-activated ion channels.
LIF with additional Reset Rules and Afterspike Currents.
All of the above, with an additional voltage-dependent component of threshold.
Models with active conductances at the soma and passive dendritic morphology based on full 3D reconstruction.