Learning and memory are associated with the formation and modification of neuronal assemblies: populations of neurons that encode what has been learned and mediate memory retrieval upon recall.

Memory is a continually unfolding process. Initial details of an experience take shape in memory; the brain’s representation of that information then changes over time. With subsequent reactivations, ...

Of all forms of memory, episodic memory is the most intimate. We recall the sequences of events that happen to us — a marriage, a visit to a foreign country, a personal achievement — in great ...