Definition of hyperthymesia
: the uncommon ability that allows a person to spontaneously recall with great accuracy and detail a vast number of personal events or experiences and their associated dates : HIGHLY SUPERIOR AUTOBIOGRAPHICAL MEMORY
People with hyperthymesia can recall almost every day of their lives in near perfect detail, as well as public events that are personally significant. Those affected describe their memories as uncontrollable associations, so when they come across a date, they "see" a vivid depiction of that day in their heads.
— Miriam Stoppard
Those equipped with hyperthymesia file away in their brains by default a detailed report on each day and can remember them in flawless detail, from news events, conversations they had to what they ate for breakfast. No matter how far removed, if prompted with a date, these individuals are able to pull the appropriate folder out of their mental file cabinet without hesitation.
— William J. Dowd
