Dendritic morphology and membrane properties of dorsal lateral geniculate nucleus (dLGN) neurons. Left to right: reconstructions of relay neurons (X-,Y-,W cells) and an interneuron, along with their corresponding regional preferences, membrane properties, and firing characteristics. Traces reflect voltage responses to current injection. Letters represent the activation of different voltage-gated conductances. AHP, after-hyperpolarization; A, A-type K+; LT, low-threshold Ca2+; H, mixed cation.