I have always said that deja vus are when something we did in a dream happens. A similar thing to what you described has happened to me before, where I was pretty sure that I’d dreamed something that happened during the day.
that is precog and we have a different sticky topic for that.
Yeah I know, but I’m just saying that that’s the explanations for deja vus, just a dream of a similar situation that we could have dreamt at any time in out life but forgot and that’s why we feel like we’ve defintly been in this situatioin before.
I have a theory that Déjà Vu is the misplacement of a thought into the distant memory part of the brain, or maybe a mistagging of the thought into the past thereby giving you two images of a moment, one seemingly in the past and one in your short term memory. I think that the “older copy” of the moment is destroyed "(maybe as an evolutionary adaptation) in favor of the short term memory copy because the brain would have an maddeningly disturbing absense in memory. I mention this because you immidiatly lose the sensation of Déjà Vu as you lose the two copies of the moment, but the brain recalls the seperate sensation of remembering the same thing twice.
This would explain the uncanny indifference between what you think has happened and what just happened during what we call Déjà Vu.
This is untestable in my opinion. There is no way I have heard of to trigger Déjà Vu, therefore we would have to keep a person under monitering constantly in hopes of him feeling Déjà Vu and being able to track the paterns of the brain signals. However the amount of change is probably undetectable and you would only get a spike of shock that the person feels from knowing Déjà Vu has taken place. If anyone would like to add to this theory that I have posted here they may, keep in mind I havn’t analyzed the 6 pages of detailed posts yet =(
not a bad idea you know, spec for 15.
opens ones mind up to a few different ideas
Isn’t deja vu just a momentary lapse, or delay between the sensory data being received and the brain fully processing it?
I couldn’t read the whole topic so if someone already mentioned this then sorry!
My understanding is that you may see or hear whatever it is but your brain doesn’t fully intergrate the info into you right away. This is why when you have Deja vu you sometimes think that you can predict exactly what someone is going to say a split second before you actually hear them say it. You’re not actually predicting it, you’re just remembering before the audio data is actually processed.
What I find more fascinating is Jamais vu, this is when something that you do all the time, something that is incredibly normal to you, feels strange and alien, as if you yourself have suddenly found yourself out of place, out of time even, within your own daily routine.
I get it sometimes in the office, I’ll just be walking down the corridors or something and suddenly the most peculiar feeling of alienation and confusion comes over me and everything that I know becomes unfamiliar and unreal.
A couple days ago, i was sitting in my living room with brother and mom aswell. Watching tv and such, when my dad walks in. I thought to myself, wait this happend before, we were saying the same things and i knew what everybody was going to say. I kept this to myself and even like pointed to where everyone was going to say something. But the oddest thing came when i pointed at my mom and said the exact same thing she said like a second before her.
Eerie isn’t it, true story.
I remember one time I was having Deja Vu and I thought to myself I should just do something totally out of the ordinary so the feeling will stop. So I ran into my living room and rolled on the ground but the feeling only got stronger.
I tend to have the nothingness feeling when I get really excited, and then the feeling of not actually being there makes me do some crazy stuff.
I’ve had a dream once in which I had a deja-vu. I was working behind a counter helping this woman who asked me a question. Then she left the shop. Then I dreamt the same thing again and as I was helping this woman I realized I was having a deja-vu. I then woke up with an unexplainable feeling of having discovered something profound, that there is a connection between dreams and deja-vu’s.
The next day, I started looking on the internet. Beforehand I always thought that deja-vu’s were something like a glitch in your brain. But on the internet I discovered a different theory.
Deja-vu’s are things you see in real life, that you previously saw in your dreams. I read this one account from this guy That had dreamt about sitting in a classroom and something happened. 30 seconds after this event the headmaster came into the classroom and asked about something unrelated to the event.
When this guy a few days later in the classroom saw this event happening before his eyes, he knew the headmaster was going to come in the classroom in 30 seconds and asked about this unrelated thing, it actually happened!!
I think I have had an experience like this as well, but I can’t proof it because at the time I wasn’t keeping a dream journal. So now I’m not sure about my own experience. It was about a question that was being asked on Who wants to be a millionaire. It was a difficult question, but I knew the answer because I think I dreamt it. I dreamt the whole scene and then it happened… Really weird.
Sometimes i wake up with a dream still fresh in my memory and it seems very familiar to me. It doesn’t relate to any real life events, Only past dreams or fake dream memories.
Have you ever had deja vu? Where your in the middle of doing something and it suddenly feels like this has happened before, or you know what will happen next. One time I was playing the video game “Super smash Bros. Melee”, and I had this weird feeling of deja vu and I knew what was going to happen (I won the match 
)
Do you think that deja vu is at all like dreaming. How do you think that you know what will happen?
Oops, sorry! I didn’t see the deja vu sticky! Could someone move this please?
No problem 
[If they’re moving this they might as well move my post too?]
I believe the deja vu feeling is actually from a dream. We have about 6 dreams a night and do not remember all of them. Now, if you do something IRL that you did in one of those dreams you might have a deja vu feeling.
i would say they are definately related.
i talked about this with my girlfriend once, she said she has dejavu quite often. I have it every now and then but we both agreed on and came to the same conclusion that it happens in a dream first, but you forget the dream and then when it happens in RL, you experience the dejavu. So having dejavu would mean that you had a precognitive dream earlier on, but you just forgot about the dream. If you were to remember the dream, then i doubt it would happen because sometimes by simply knowing whats going to happen, it changes what really would happen.
I had a Deja Vu today, at my friends house. And i was so certain that i had been there before that my heart stopped for a second and i almost came to my knees.
I think the reason why people get the déjà vu feeling, is that the memory-part for your brain stops for a little while. And while it is stopped, you get this strange feeling. I often get the feeling when I am hungry or thirsty (the brain can’t work with an empty stomach, huh?)
I used to think that I had dreamt things, and experienced them later. But when I get that feeling, I really can’t tell what will happend next.
Anyways, I just got that déjà vu-feeling while I ate food, and thought about something, for some minutes ago. Now you know that.
My classmates also get this feeling once in a while:
“I’m having a déjà vu!”
"Hey, do you remember this? 
"
“No, it’s gone now…”
but if your memory stopped, that would just mean you forgot where you are, you would experience temporary amnesia not a feeling of re-experiencing something.
If you believe in the theory of a multiverse where every possible situation/outcome has been played out on different timelines, then it could be explained that these deja vu moments, are moments that have happened before… exactly the same except on a different timeline/fateline. It’s like an overlapping or something, and we feel like we’ve experienced this moment before because we have except on a different timeline/alternate dimension. It would explain why when it happens we feel like we’ve done it before, yet dont know whats going to happen next. Would also explain why they only happen for a short period of time.
The nothingness you talk about, I have felt to. I havnt felt it sence I was about 8 or 9, but it was a void… Its hard to explain, but I dont like it. I wonder what it is, I thought I was the only one who felt it.
I wonder what would happen if you expiranced the feeling of Dajivu for like an hour streight. You know how you get the feeling that you can allmost predict what will happen next, but the feeling only last for a few secounds.
I used to get deja vu all the time so i learnt to prolong the experience… instead of every time it happens saying “woah! deja vu” i would keep quiet and just let it all play out. Even with longer dejavu experiences it was still very hard to predict what would happen next… it was more just the feeling of having done it before exactly the same.
I am quite familiar with the void myself and it is an unpleasant place, however it is a wonderful place for meditating because you can be still much easier.
Whenever I experience deja vu it’s usually surrounding some mundane conversation or unimportant event.
I’ll have a dream about it 2-3 weeks beforehand, then when the event actually takes place in WL I get this ominous feeling, like I have to be careful to avoid a certain outcome for whatever reason. It’s pretty strange. I generally don’t say anything because I’m trying to think back to what happened next in the dream, but then it passes and it no longer feels familiar… perhaps because I didn’t play my part.
When it ‘clicks’ that I’m experiencing a deja vu, my mind feels like the sensation you get when biting down on tinfoil. That’s the best way I can describe it 