Maximal conductance and permeability for ionic channels.

Gbar = maximal conductance S/M2 = Siemans per meter squared; Pbar = maximal calcium permeability. Prox dend = proximal dendrites; mid dend = middle dendrites; dist dend = distal dendrites.Gbar为最大电导（maximal conductance），单位为S/M2，即西门子每平方米；Pbar为最大钙通透性（maximal calcium permeability）。Prox dend指代近端树突（proximal dendrites）；mid dend指代中端树突（middle dendrites）；dist dend指代远端树突（distal dendrites）。