Dynamics analysis. (a) Two-parameter bifurcation diagram of the ([Ca], h) subsystem when k₁ = 0.37, together with projection of the trajectory of the full system (black-colored curve); the curves in the diagram display the fold bifurcation (the red curve f), and the homoclinic bifurcation (the green curve homo) of the fast subsystem in Eqs. (1), (2), and (4). (b) The fast-slow decomposition and bifurcation analysis for the bursting in somatic part of MB with [Ca] = 0.0195 when k₁ = 0.37. (c) Time series of slow-parameter h of the modified model with different values of k₁. (d) Two-parameter bifurcation diagram of the somatic subsystem.