I have been using a CPAP machine every night for 18 years. If I take a nap in my chair now during the day without a CPAP machine I have scary, vivid nightmares. I believe it is from low blood oxygen. These dreams can start almost as soon as I sit down in my chair and close my eyes but usually after I sleep a few minutes. My walker is mising in recent dreams. I will have a dream then wake up from the dreams usually because I’m falling. In the year 2000 my blood oxygen dropped to 50 while I slept without a CPAP machine.
I use a walker now because my balance is so bad. I cannot walk without hanging on to something. I have started to believe my subconscious mind makes me lose the walker in the dreams and without the walker, I start falling down and that wakes me up. I can’t help but think it is the subconscious mind keeping me from passing out due to loss of oxygen.
I would love to have some experts in REM sleep and dream studies mull this over and see what they come up with. I can wake up from a dream and recall it well, then go back to sleep and almost continue the same line of dreams