Fig. 3.

A 1D pattern formation. (A) The dimensionless membrane potential v = (V – V₀)/|V₀| (black), the dimensionless total membrane current (I₁ + I₂)/G₂|V₀| (cyan), and the dimensional ohmic current D̃(I₁/D₁ + I₂/D₂)/G₂|V₀| (blue) as a function of the dimensionless spatial coordinate X = x/λ₂ along the cellular axis (λ₂ is the cable length of 2). (B) v and dimensionless concentrations (C₁ – C₁₀)/C₀ (pink) and (C₂ – C₂₀)/C₀ (red) as a function of X. Parameters are G₁/G₂ =–0.8 and D₂/D₁ = 100. The initial perturbation is a spatial modulation of small amplitude at v = 0. After a specific time, a stationary spatial pattern of membrane potential, currents, and concentrations appears along the cellular axis.