reminiscence reminiscence /ˌrɛməˈnɪsəns/

noun

1. The process of remembering (especially the process of recovering information by mental effort)  ( recall , reminiscence , recollection )
   the process of remembering (especially the process of recovering information by mental effort)
    He has total recall of the episode
   he has total recall of the episode
   
2. A mental impression retained and recalled from the past  ( reminiscence )
   a mental impression retained and recalled from the past