Naked Science Forum

General Science => General Science => Topic started by: FarahJ on 21/02/2009 15:30:02

Title: What causes deja vu?
Post by: FarahJ on 21/02/2009 15:30:02: FarahJ asked the Naked Scientists:

How do you explain deja vu? what causes it to happen? and why does it happen?

What do you think?
Title: What causes deja vu?
Post by: paul.fr on 21/02/2009 16:58:30: I'm sure we've had this question before...
Title: What causes deja vu?
Post by: paul.fr on 21/02/2009 17:03:45: Try these links:

What is (http://www.thenakedscientists.com/forum/index.php?topic=6309.0)
deja-vu? (http://www.thenakedscientists.com/forum/index.php?topic=1933.0)
deja-vu? (http://www.thenakedscientists.com/forum/index.php?topic=10261.0)
Title: What causes deja vu?
Post by: Make it Lady on 21/02/2009 21:59:41: I think that we often do things that are similar to things we have done before and as our brains try to make sense of and sort our memories it may compare the present situation with a similar one from the past. It may just be the shapes of the buildngs you are looking at are similar to a previous vistor you have seen. This is what gives you that shiver of dejavu.
Title: What causes deja vu?
Post by: JnA on 22/02/2009 04:37:10: My (soon to be) husband (6 days*) gets dizzy spells and occasionally vomits when he experiences deja vu. His brother is the same and has passed out on occasion.

Not that that adds anything.. I just think it's interesting.

*sorry for the moment of self involvement*
Title: What causes deja vu?
Post by: Chemistry4me on 22/02/2009 04:46:32: Quote from: JnA on 22/02/2009 04:37:10
My (soon to be) husband (6 days*) gets dizzy spells and occasionally vomits when he experiences deja vu.
Is that often?

-----
E.g. When the Dragons are playing? [::)][::)]
(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Flol%2F4.gif&hash=dc0017defb1737ae43c0ff6efcb35b2a)
Title: What causes deja vu?
Post by: JnA on 22/02/2009 04:50:13: Quote from: Chemistry4me on 22/02/2009 04:46:32
Quote from: JnA on 22/02/2009 04:37:10
My (soon to be) husband (6 days*) gets dizzy spells and occasionally vomits when he experiences deja vu.
Is that often?

-----
E.g. When the Dragons are playing? [::)][::)]
(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Flol%2F4.gif&hash=dc0017defb1737ae43c0ff6efcb35b2a)

no...

warriors for you?
Title: What causes deja vu?
Post by: Chemistry4me on 22/02/2009 05:02:38: Is that no for the first question or the second?

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Warriors? Yeah! [:D]
But there are sooooooo many Queenslanders in there that you wouldn't believe!!!
Title: What causes deja vu?
Post by: Madidus_Scientia on 22/02/2009 08:57:28: QUEENSLANDER!!!
Title: What causes deja vu?
Post by: Chemistry4me on 22/02/2009 08:58:09: Eh?
Title: What causes deja vu?
Post by: Chemistry4me on 22/02/2009 08:59:23: Oh...! You mean you're a Queenslander.
Of course, you should be proud of yourself [:)]
Title: What causes deja vu?
Post by: Don_1 on 22/02/2009 12:55:11: A recent meeting of the Deja Vu Society was a complete flop. Not one member turned up as they all thought they had been there before.
Title: What causes deja vu?
Post by: Karen W. on 22/02/2009 13:42:33: Quote from: JnA on 22/02/2009 04:37:10
My (soon to be) husband (6 days*) gets dizzy spells and occasionally vomits when he experiences deja vu. His brother is the same and has passed out on occasion.

Not that it adds anything..I just think it's interesting.

*sorry for the moment of self involvement*

Congratulations JnA!!! You should be ecstatic!!!
Wonderful...news....Oh how I love love!!!! All my best to the both of you!

My grandma had the gift of Vision....and she always told me that deja vu was an experience one has when they are on the right path in their life.....

Now I know many do not believe in such Things but I personally had many experiences with my Grandma and know beyond any doubt that his gift was real and that many really have It...I have also seen it abused...which is sad...
Title: What causes deja vu?
Post by: Madidus_Scientia on 22/02/2009 13:52:56: If deja vu was seeing into the future then why do you only feel it after you've seen the event you think you've seen before, you can never truly see into the future, it just feels like you have

A trick of the brain
Title: What causes deja vu?
Post by: Karen W. on 22/02/2009 14:04:24: Quote from: Madidus_Scientia on 22/02/2009 13:52:56
If deja vu was seeing into the future then why do you only feel it after you've seen the event you think you've seen before, you can never truly see into the future, it just feels like you have

A trick of the brain

It's not like that seeing into the future! Thats not what I said.....I said she believed it meant you were on the right path in your life....The way she explained to me was that you ha done this before the same situation and had come thgh unscathed...you had made the rigt decisions bringing you again through unscathed whole and things would be just fine.... just fine.. Meaning in that currant situation.......Nothing to do with seeing into the future but into th past and using it as a guide....to help you.... That was just her opinion.....and I happen to agree with it......
Title: What causes deja vu?
Post by: lyner on 22/02/2009 14:29:25: Our consciousness lags behind brain processes and input senses by about 1/2second. There is a good experiment you can do to demonstrate this, if you glance at the second hand of a quarz clock. It sometimes seems to take a long time to appear to start moving.
A good,rational explanation for DV is that you get two experiences of some events. You perceive this as an event and a memory of the same event. DV is a bit like dreams in that it seems like sense but doesn't tend to stand up to scrutiny. For instance, trying to predict what will happen next, soon snaps you out of the illusion.