Retrospective memory refers to memory for people, words, and events encountered or experienced in the past.

Retrospective semantic memory refers to the collection of knowledge, meaning and concepts that have been acquired over time.

It is important to note that the memory referred to here is working memory.

Sometimes memory refers to the computer equivalent of the folders and cabinets.

The short-term memory refers to the ability to hold information from immediate past for a short duration of time.

Explicit memory refers to memories that are remembered with conscious awareness of doing so.

True memory refers to the correct retention of information.

Second, "Past memory" refers to "laying down of the present, conscious moments in the brain so that they can be accessible if we need them".

Semantic memory refers to knowledge about factual information, such as the meaning of words.

Autobiographical memory also refers to memory of a person's history.