Hippocampal Neuroanatomy

This chapter outlines the anatomy of the hippocampal formation, beginning with issues of nomenclature and definition. It compares and contrasts the picture of hippocampal anatomy obtained from studies of the rat with that of the monkey. It describes the extensive cortical connections of the entorhinal cortex in the macaque monkey and the emerging prominence of adjacent related brain regions, such as the perirhinal and parahippocampal cortices. It then compares information on the monkey hippocampal formation with what is known about the human hippocampal formation. The chapter concludes with a summary of the principles of hippocampal intrinsic circuitry and a discussion of how they may govern the flow of information through the hippocampal formation.