Memory in Soul and Spirit

In life, memory is predominantly stored in the body by mechanisms not yet understood. However, since the undead body is not functional, there is some evidence that memories are able to last after death.
It seems that present in the layered network of Magic, Life, Emotion, and Sentience, there is a capacity to hold some of what makes a person themselves. Witnesses who have spoken with their undead family or friends have been collected into broad themes of memory retention.
Foremost, the more important a memory was to the person, the better it might be retained after death. These include foundational events that crystallized into their life choices, like the moment they realized their decision to become a soldier, or the birth of their child. Details of the particular event related to the physical circumstances fall away, for example what location they were in or what the weather was like. They also tend to forget people who were present but unnecessary to the scene, for example a mother might remember a midwife was present, but not her face or identity.
Another trend is that highly emotional memories are more likely to remain. This can be any emotion, and might not require any special significance. The undead might remember the last argument they had with their brother, or being terrified of wolves while traveling. The most well preserved memories involve all of these factors.