I've noticed that when Im sleep deprived enough after a few days up on speed I start to dream while im still awake. Memories of dreams start flowing through but I start hallucinating things that arent there.

One day I saw a piece of plastic moving or vibrating real fast. It caught my eye and I went in for a closer inspection and it stopped moving. A voice in my head said "this is a parallel universe".

Another time I saw a footprint on the wall that wasnt there the next morning. That same night I felt the whole house shaking I even saw the change on the table rattling but it was a physical impossibility.

My visual hallucinations were alright but the auditory hallucinations got fairly negative and evil at times. Voices in my head trying to convince me I was dead.

Anyone ever had dreams (or nightmares) integrated into regular reality?