I think this is fascinating?

The specific role of each of the six main regions in episodic retrieval (periodic) is still unclear, but some ideas have been suggested. The right prefrontal cortex has been related to retrieval attempt; the medial temporal lobes to conscious recollection; the anterior cingulated to response selection; the posterior midline region to imagery; the inferior parietal to awareness of space; and the cerebellum to self-initiated (Wikipedia, 2010.)

According to neuro imaging data, studies on recall and recognition have consistently found increases in regional cerebral blood flow (RCBF) in the following six brain regions:

(1) the prefrontal cortex, particularly on the right hemisphere

(2) the hippocampus and parahippocampal regions of the medial temporal lobe

(3)...