Fig 10. Evaluation of J_up and J_NaCa fluxes in the cytoplasm.

A) Spatial distribution of the magnitude of J_up (b) with the Ca²⁺ transient shown as a reference (a). The blue semi-transparent contour render is a pseudo-slice of the SR for reference. B) Spatial distribution of the magnitude of J_NaCa (b) with the whole-cell average current shown as a reference (a). Triangular markers in the upper panels indicate the timings relative to the applied stimulus of the corresponding lower panels i-iv. For J_up (A) these correspond to 10ms, 25ms, 100ms and 200ms; for J_NaCa (B) these correspond to 25ms, 100ms, 345ms and 500ms.