Hippocampal Function and Gonadal Steroids

The hippocampus plays a central role to form new episodic memory in various species in‐ cluding humans (Scoville and Milner, 1959). The hippocampal neurons seem to process vari‐ ety of information, such as spatial location (Wills et al., 2010), temporal information (Mitsushima et al., 2009), and emotional state (Chen et al., 2011) within specific episodes (Komorowski et al., 2009; Gelbard-Sagiv et al., 2008). However, the critical mechanism how to sustain a piece of specific memory and how to organize the memory fragment to form "episodes" is still largely unknown.