Louise Owen, the woman in this video, has a very extreme form of hyperthymesia (superior autobiographical memory), which means that her memory cannot forget anything in her life.

Clive Wearing suffers from a severe kind of amnesia (anterograde amnesia), which causes him to forget everything that happened in his life more than 30 seconds ago.

Related:

Lara Almarcegui Stephen Wiltshire Cesare Pietroiusti Bethan Huws