The role of these neurons in the adult dentate gyrus in memory processing is further supported by the fact that behavioral experiments have shown that an intact dentate gyrus is integral to hippocampal memory formation. It is speculated that the dentate gyrus acts as a relay station for information relating to memory storage. The likelihood of a critical period could change the way we view memory processing because it would ultimately mean that the collection of neurons present is constantly being replenished as new neurons replace old ones. If a critical period does indeed exist, this could possibly mean that: (1) Diverse populations of neurons that represent events occurring soon after one another may connect those events temporally in the memory formation and processing; OR (2) These different populations of neurons may distinguish between similar events, independent of temporal position; OR (3) Separate populations may mediate the formation of new memories when the same events occur frequently.
