 Experiments using intrahippocampal transplantation of hippocampal cells in primates with neurotoxic lesions of the hippocampus have shown that the hippocampus is required for the formation and recall, but not the storage, of memories.It has been shown that a decrease in the volume of various parts of the hippocampus in people leads to specific memory impairments.In particular, efficiency of verbal memory retention is related to the anterior parts of the right and left hippocampus.