Interspike interval correlations in neuron models with adaptation and correlated noise
Fig 10
Traub-Miles model with slow M current.
Panel A shows the membrane potential V(t) and the adaptation’s gating variable z(t). At t = 25ms a constant current I = 5μA/cm2 (red line panel) is applied so that the model undergoes a transition from the excitable to the tonic firing regime. Due to the slow build-up of the adaptation current the model shows a transient behavior where the firing-rate decreases until z(t) has reached its stationary value (doted line). The inset shows that z has two different phases, one during which z rapidly increases and another where z slowly decays. Panel B shows the deterministic limit cycle (dashed line) together with a noise trajectory of the tonically firing model with T* = 18.9ms. Parameters are as given in Table 1.