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. Author manuscript; available in PMC: 2017 Aug 15.
Published in final edited form as: J Comp Neurol. 2016 Feb 17;524(12):2503–2515. doi: 10.1002/cne.23967

Figure 11.

Figure 11

Summary of the topographic organization of BF projections to the perirhinal, postrhinal, and entorhinal cortex in rats. Red and blue lines indicate cholinergic and non-cholinergic projections. Thickness of lines indicates the relative strength of projections. The perirhinal and postrhinal cortices receive cholinergic and non-cholinergic projections mainly from the caudal basal forebrain (caudal GP and SI), whereas the entorhinal cortex receives projections mainly from the rostral basal forebrain (MS/VDB). Cholinergic neurons projecting to the perirhinal and postrhinal cortex comprise 26-48% of the total projection neurons (cholinergic and non-cholinergic projection neurons) and 13-30% in the entorhinal cases.