was, what the weather was like when you met them, etc. Specific episodes are made easier to remember and recall by repeatedly exposing oneself to them (which strengthens the links in the memory space) allowing for faster retrieval when remembering. Hippocampal cells (neurons) are activated depending on what information one is exposed to at that moment. Some cells are specific to spatial information, certain stimuli (smells, etc.), or behaviours as has been shown in a Radial Maze Task. It is therefore the hippocampus that allows us to recognize certain situations, environments, etc. as being either distinct or similar to others. However, the Three Stage Model does not incorporate the importance of other cortical structures in memory. The anatomy of the hippocampus is largely conserved across mammals, and the role of these areas in declarative memory are conserved across species as well. The organization and neural pathways of the hippocampus are very similar in humans and other mammal species. In humans and other mammals, a cross-section of the hippocampus shows the dentate gyrus as well as the dense cell layers of the CA fields. The intrinsic connectivity of these areas are also conserved. Results from an experiment by Davachi, Mitchell, and Wagner (2003) and subsequent research (Davachi, 2006) shows that activation in the hippocampus during encoding is related to a subject's ability to recall prior events or later relational memories. These tests did not differentiate between individual test items later seen and those forgotten. Prefrontal cortex The lateral Prefrontal cortex (PFC) is essential for remembering contextual details of an experience rather than for memory formation. The PFC is also more involved with episodic memory than semantic memory, although it does play a small role in semantics. Using PET studies and word stimuli, Endel Tulving found that remembering is an automatic process. It is also well documented that a hemispheric asymmetry occurs in the PFC: When encoding memories, the Left Dorsolateral PFC (LPFC) is activated, and when retrieving memories, activation is seen in the Right Dorsolateral PFC (RPFC). Studies have also shown that the PFC is extremely involved with autonoetic consciousness (See Tulving's theory). This is responsible for humans' recollective experiences and 'mental time travelling' abilities (characteristics of episodic memory). Amygdala The amygdala is believed to be involved in the encoding and retrieval of emotionally charged memories. Much of the evidence for this has come from research on a phenomenon known as