Fig. 5.

Stability diagram. The relevant parameters are –G₁/G₂, D₂/D₁, and p, which quantifies the variations of currents with concentrations. Three values of p are considered: p = 0 (xxx), 0.1 (***), and 0.3 (+++). Domains 1 (stability of the membrane potential due to capacitive relaxation) and 3 (instability, a wave propagation, leading to a new homogeneous resting state) were expected. The curve of zero total conductance –G₁/G₂ = 1 distinguishes domain 1 from 3. Domain 2 defines the new cellular instability that leads to stationary patterns of transcellular ionic currents on a typical ionic diffusive time.