A comparison of the efferents of the amygdala and the hippocampal formation in the rhesus monkey: I. Convergence in the entorhinal, prorhinal, and perirhinal cortices

This is the first in a series of papers investigating the neuroanatomical basis for the interaction of the amygdala and the hippocampal formation in the rhesus monkey. The present report focuses on the complementary and convergent projections of the amygdala and hippocampal formation to the entorhinal and perirhinal cortices. These results were obtained from complementary experiments using injections of radioactively labeled amino acids to identify the anterograde projection patterns and injections of horseradish peroxidase and fluorescent retrograde tracers to confirm the cytoarchitectonic location of the neurons of origin for each projection.

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