Figure 3.

Medial entorhinal circuits. Principal cells in all layers receive monosynaptic convergent inputs from PrS and PaS. Axons of layer V pyramidal cells target superficial layers, making synaptic contacts onto principal cells in layers II and III. These layer V cells are likely contacted by local axons of layer II and III cells, and cells in layer II presumably contact layer III cells. Although no neurons are indicated in layer VI, synaptic contacts from PrS and PaS have been reported [34] and are schematically indicated. (Online version in colour.)