側頭葉
Recent research using neuro-imaging technology including PET and fMRI scanning has shown that there is an extensive amount of distributed brain activation during the process of episodic encoding and retrieval. Among the various regions, the two most active areas during the constructive processes are the medial temporal lobe (including the hippocampus) and the prefrontal cortex. The Medial Temporal lobe is especially vital for encoding novel events in episodic networks, with the Hippocampus acting as one of the central locations that acts to both combine and later separate the various features of an event. Most popular research holds that the Hippocampus becomes less important in long term memory functioning after more extensive consolidation of the distinct features present at the time of episode encoding has occurred. In this way long term episodic functioning moves away from the CA3 region of the Hippocampal formation into the neocortex, effectively freeing up the CA3 area for more initial processing.