Calcium transients in (a) the 0.1 μm thick submembrane shell and (b) the cell core of a single dendritic compartment of 4 μm diameter with 4 radial shells. Slow buffer with initial concentration 50 μM, forward rate k+ = 1.5 μM-1s−1 and backward rate k− = 0.3 s−1. Blue dotted line: unbuffered calcium transient. Gray dashed line (hidden by solid line): excess (EBA) approximation. Gray dash-dotted line: rapid (RBA) buffer approximation. Binding ratio κ = 250. All other model parameters as in Figure 6.5.
Use Parameters panel in GUI to change parameter values for buffered model, EBA and RBA simultaneously. Same code can generate results for both figures 6.12 and 6.13.