Figure 6.

New insights into the primate memory-encoding system obtained from the present study. A, The distribution of regions within the MTL (blue represents PRC; yellow, ERC; green, PHC) in monkey brain. Modified from Mayford et al. (1997). R, rostral; C, caudal. B, Schemata of the primate memory-encoding processes proposed according to results of the present monkey fMRI study. This view of the primate memory-encoding system suggests that memory traces related to initial items are formed in the hippocampus and the caudal ERC, whereas memory traces related to middle items are formed in the PRC. This is consistent with the literature on anatomy of monkeys, which has reported that the hippocampus has major reciprocal direct connections with the caudal ERC but not with the PRC.