Summary of the hypothetical networks activated by the LOT-evoked hippocampal input into the m-EC. The schematic representation of the circuit is superimposed on a parasagittal section of the olfactory-limbic cortex, which includes the PC, the l-EC, and the m-EC. See Discussion for details. Excitatory and inhibitory pathways are illustrated by continuous and dotted lines, respectively. LOT, Lateral olfactory tract; PC, piriform cortex; DG, dentate gyrus; CA, cornu ammonis; LD, lamina dissecans; SUB, subiculum.