Sleep research: Longest dreams occur just before awakening

I remember reading somewhere that your longest dream occurs just before awakening. Evidently, as the night goes on, you start by dreaming a short dream, then a while later, you dream a longer dream, and so on. That means that if you don’t sleep a full night, you don’t get the opportunity to have your longest dream with the most information in it.  It also means that your longer dreams provide the most opportunity for communication from your subconscious and hence your soul. This may explain why getting enough sleep is the first step in furthering dream recall, which can lead to psychic information.