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The Journal of Mathematical Neuroscience
Fig. 3 | The Journal of Mathematical Neuroscience (JMN)

Fig. 3

From: A Mathematical Model of a Midbrain Dopamine Neuron Identifies Two Slow Variables Likely Responsible for Bursts Evoked by SK Channel Antagonists and Terminated by Depolarization Block

Fig. 3

Fast-slow bifurcation diagrams for oscillatory plateau potentials. a Bifurcation analysis of the full model from Fig. 2b with \(g_{\mathrm{Na}} = g_{\mathrm{K},\mathrm{SK}} =g_{\mathrm{K},\mathrm {DR}} =0\). Solid and dotted lines represent the stable and unstable fixed points on the bifurcation diagram, respectively. Dots indicate bifurcation points, with SN denoting saddle-node bifurcation. Double and single arrows indicate the direction of fast and slow changes in voltage, respectively, on the closed curve (thin black lines) that represents the limit cycle trajectory. b Same as a except the bifurcation diagram is equivalent to the voltage nullcline in the reduced two-variable system, and the nullcline for the \(o+i\) pool is shown (dashed curve)

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