Figure 3.
Schematic view of triad in lateral geniculate nucleus. Shown are the various synaptic contacts (arrows), whether they are inhibitory or excitatory, and the related postsynaptic receptors. The triad includes terminals from a retinal axon (green) and interneuron dendrite (black) and involves three synapses: from the retinal terminal to the interneuron terminal, from the retinal terminal to an appendage of the relay cell dendrite (orange), and from the interneuron terminal to the same appendage.