Why can't we remember our dreams?

06 July 2008

Question

I was wondering why it was so difficult for us to remember our dreams when we wake up in the morning?

Answer

Professor Mark Blagrove, Professor of Psychology at Swansea University:

People differ on whether or not they can remember their dreams. Some people have a great deal of interest in their dreams, have very vivid dreams or their level of anxiety or sleep quality results in people remembering dreams at different amounts each month, say.

In general, for all of us, dreams are very easily forgotten once we wake up if we don't consolidate them or, in other words, if we don't transfer them from short-term to long term memory immediately upon waking.

There's a few theories of why that happens to all of us. One possibility is that our brain neurochemicals, during sleep, are very different from during wake time and so they don't allow us to consolidate memory.

The other thing that's quite possible is that we don't pay attention to our dreams or are unable to do so during sleep. We are unable to remember what occurs to us during sleep. Even people with sleep apnoea who wake up during the night don't know that that happens to them.

Similarly, when we have a dream, we're not consolidating it as it occurs. Indeed, if you have people having a long REM sleep period and you wake them up, once the REM sleep period gets over about 20 minutes you don't find that dreams increase in length very much. It's as if during the dream we forget what was happening. The same happens immediately we wake up: the dream just disappears.

Comments

I wake up majority of my mornings not dreaming anything. I can't remember anything, it's like I woke up right after I fell asleep. Sometimes, I can only remember a short amount time being in darkness. Like some thing was suppose to fill in for that darkness, obviously it was my dreams but I can never remember them no matter how much I want to. It's scary because I feel like I keep forgetting these dreams because my brain wants for forget it. Somehow, I feel like these dreams are very important and are trying to tell me something. It's just my intuition though. Also the only dreams I can remember were never good, of course it's caused by stress. However, it still appears even when I'm happy. Overall, it feels scary knowing that I can't remember my dreams. I can't just remember just being in darkness I want to know what my dreams were.

I keep dreaming of a woman I don't know and is creating problems.

I always thought our brain just decided that dreams were useless so they threw the memories away or something.

Hmm. It's kind of as if our brain doesn't want us to remember our dreams

Thank you for writing the piece on why we can't remember our dreams. It really helped me with a project i have for school. Q&A and don't worry i didn't copy word for word.

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