This region has the highest concentration of glucocorticoid receptors in the brain. One oscillatory pattern found in this brain region features large-amplitude, aperiodic sharp waves, followed by fast ripples. Large Irregular Activity and theta waves are two of this region's slow wave patterns. The fornix carries signals from here to the mammillary bodies. Long-term potentiation was discovered in this region, which consists of (*) four subregions named for this structure's former name, "Ammon's horn." The phenomenon of replay was discovered in this region's place cells. This region forms a namesake formation with the subiculum and the dentate gyrus. Damage to this structure can cause anterograde amnesia, revealing its role in consolidating 
This region has the highest concentration of glucocorticoid receptors in the brain. One oscillatory pattern found in this brain region features large-amplitude, aperiodic sharp waves, followed by fast ripples. Large Irregular Activity and theta waves are two of this region's slow wave patterns. The fornix carries signals from here to the mammillary bodies. Long-term potentiation was discovered in this region, which consists of (*) four subregions named for this structure's former name, "Ammon's horn." The phenomenon of replay was discovered in this region's place cells. This region forms a namesake formation with the subiculum and the dentate gyrus. Damage to this structure can cause anterograde amnesia, revealing its role in consolidating memory. For 10 points, name this part of the limbic system in the medial temporal lobe, the Greek for "seahorse."
This region has the highest concentration of glucocorticoid receptors in the brain.
hippocampus