An imagination as a process, including memories about events in other time, relates to N.
An abbility to remember concrete sensations - to S. Strong S allows to remember more of physical details.
Si is about subjective sensations - tastes, body pain, etc. Se is about objective details as colors, forms, etc.
> So how do you guys think about your memories and nostalgia?
nostalgia, being emotions, relates to F
remembering data as "what is that", of thoughts, data by words - to T
NF types should be predisposed the most to deam about emotionally important past. Also, they may to have most distorted and muddy memories.