The spatial properties of a model neuron increase its coding range.
The coding properties of one-compartment and two-compartment model neurons are compared. The membrane depolarization in both models is described as a deterministic leaky integrator. Interspike intervals are identified with the periods between reset of the depolarization after firing and consecutive crossing of a fixed firing threshold. The two-point model has an input in the dendritic compartment and an output in the trigger-zone compartment. it is shown that the sensitivity threshold for the two-point model is shifted to the larger values of the input intensity with respect to the sensitivity threshold of its single-point counterpart. Further, its coding range is substantially larger than the coding range of the single-point model.
Lánský
P
P
Institute of Physiology, Academy of Sciences of Czech Republic, Prague. lansky@biomed.cas.cz
Rodriguez
R
R
D008959:Models, Neurological; D009474:Neurons / Q000502:physiology*