by Scoville and Milner (1957), the important role of the hippocampus in the formation of memory has been extensively documented. Until now, a vast majority of actual experimental work with animals and humans has been done considering the hippocampus as a homogeneous structure with a unified functional role (Eichenbaum et al., 1999; O’Keefe et al., 1998). However, numerous studies report the mor...