Mechanisms of Firing Patterns in Fast-Spiking Cortical Interneurons
Figure 6
Fast–Slow Analysis of Neurons with Small Na+ Window Current Exhibiting a Depolarized Rest Potential or Stuttering
Fast–slow analysis is described for θm = −24 mV.
(A,B) Parameters are: gd = 0.39 mS/cm2, Iapp = 2.9 μA/cm2. (Except for Iapp, parameters are as in Figures 5A–5C and 2C. The neuron is quiescent at steady state.)
(C,D) The parameters gd = 1.8 mS/cm2 and Iapp = 4.2 μA/cm2 are as in Figure 2D, and the neuron stutters at steady state. For each case, we plot the bifurcation diagrams of the fast subsystem in the V-b space (A,C), and the functions b∞(VFP(b)) for fixed points and F(b) for limit cycles (Equation 2) as functions of b (B,D). Symbols are as in Figure 5.