While the CA3 subfield is involved in encoding, storage, and retrieval of memory, the dentate gyrus is important in pattern separation.[1] When information enters via the perforant path, the dentate gyrus separates very similar information into distinct and unique details.[37][38] This ensures that new memories are encoded separately without input from previously stored memories of similar feature,[4] and prepares the relevant data for storage in the CA3 region.[37] Pattern separation gives the ability to differentiate one memory from other stored memories.[39] Pattern separation begins in the dentate gyrus.