Fig. 5.

Dorsal and midsagittal view of the rat brain indicating the proposed routes by which information from the medial entorhinal grid cell area may reach PPC. The most likely route by way of the connections mediated by the postrhinal cortex is indicated (yellow and purple) as well as the multisynaptic routes using pathways through the lateral posterior complex of the thalamus (purple), and the retrosplenial cortex (RSC) and dorsal portion of medial prefrontal cortex (PL and ACd) (yellow and blue). (Scale bar, 1 mm.)