Compartmental model. The model consisted of one somatic compartment, 11 dendritic compartments, and included four populations of ion channels: a fast Na⁺ channel (g_Na), a fast K⁺ channel (g_A), a slow K⁺ channel (g_K), and a K⁺ leak channel (g_leak). Shown are the conductances, g = ηγ, where η is the channel density and γ is the single-channel conductance. The channel densities and single-channel conductances are given in Materials and Methods. The membrane capacitance, C_m = 1 μF/cm², and the axial resistance, R_a = 200 Ωcm, are shown. The steady-state space constant, λ = 840 μm, gives a dimensionless dendritic electronic length of L = 0.475.