Episodic memory is the record of events that the individual experiences throughout his/her/its life. Recent neurobiological results suggest that the events are stored temporarily in the hippocampus and related areas immediately as they happen, and over days and weeks, transferred to other locations (most likely in the neocortex) for permanent storage. Our research in episodic memory started with the long-term memory component for the DISCERN story processing system. More recently, we have focused on the episodic memory system of the brain, trying to understand the structure, capacity and memory effects through computational modeling and mathematical analysis.