CA1 Region, Hippocampal

**Definition:** One of four subsections of the hippocampus described by Lorente de No, located furthest from the DENTATE GYRUS.

**Tree numbers:** - A08.186.211.180.405.099 - A08.186.211.200.885.287.500.345.099

**Synonyms:** - Cornu Ammonis 1 Area - Hippocampal Sector CA1 - CA1 Field of Hippocampus - Hippocampus CA1 Field - Regio Superior of Hippocampus