Some mouths prior I got depersonalization I was in a crisis and I went to some therapy that included dream interpretations. So, I was very aware of my dreamlife. I could remember prior to the outset 2-3.dreams once a night. This changed after the outset to 2-3 once a month.
Giulio Tononi have mentioned dissociative states in a book he wrote with the late noble prize winner, Gerald Edelman as a state of disintegrations of networks. A poorly integrated "default mode network" has also be mentioned as central in the dissociative subtype of PTSD. So, it is a failure to integrated emotions, sensory input. If the role of sleep and dreaming is integration and organizing such daily input it might be affected by the daily state one is in. I don't think depersonalization is a sleep disorder but the state has affect on sleep.In major depression it is also highly affected.
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