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Author Topic: How Long Does It Take Us To Know Something That We Already Know ?  (Read 2924 times)

Offline neilep

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Dearest Darlings of Academic Accomplishments,

As a sheepy I of course know lots of stuff !...it's my raison detre....I know..therefore I sheep !


Look, here is something that I know .....it's a hand giving the thumbs up !




A Hand Giving The Thumbs Up Just Moments Ago

Nice eh ?...oh the stories that thumb could tell !



Now, I know that's a thumb because when I see it I recognise it...but...before I know it...doesn't my brain have to interpret the image, process it and come to a conclusion as to what it is that I am seeing ?



So, how long does this process take ?..how quickly do I know stuff that I already know ?






If ewe tell me quickly then I will know that too because ...well..ewe see..I just do not know it !



Thank ewe for helping me know stuff.

Hugs & shmishes



mwah mwah mwah !!



Neil
To err Is to Sheep
xxxxxxxxxxxxxxxxxx


 

Offline Geezer

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0.01747358593218 seconds (approximately)
 

Offline neilep

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0.01747358593218 seconds (approximately)

Are ewe sure ?.....because plucking a number out my own head comes up with 0.01747358593219

Are ewe able to elaborate ?..even a soupçon of elaborateness would be nice  ;)
 

Offline Geezer

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er, well, after conducting extensive research, I have to revise my former wild guess experimental evidence.

It's more like 0.15 seconds according to certain unmentionable sources which, for the sake of argument we will label W.
 

Offline RD

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Apparently there are multiple stages in the brain for recognition ...
http://news.bbc.co.uk/1/hi/health/4086319.stm

I had heard that fMRI could detect if a person recognised something seen, so could possibly be used in law, e.g. show the defendant the murder weapon and the fMRI will tell you if they've seen it before, even if they are telling porkies.
« Last Edit: 13/02/2010 01:09:50 by RD »
 

Offline neilep

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Thank ewe RD and Le Geeze for your fascinating answers.

In the first instance of recognising the thumbs up....my brain must first identify the object and then it must secondly know that it's my thumbs up and then it must communicate that knowledge to me...ie..know it yes ?

If there is a definitive speed to the nature of recognition then I would just simply luff to know !

To know the 'w'...the secret 'w' ...only the geeze must know !  [?]
 

Offline RD

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I can recognise a face in a fraction of a second, (i.e. almost instantly know I've seen that person before),
 but putting a name to a face can take me a lot longer than 0.15 seconds:
 you know thingummy, works for whatchamacallit.
 

Offline Geezer

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Offline neilep

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0.01747358593218 seconds (approximately)

In a scary way [:0], Geezer, your answer was rather accurate. 
This article from MIT says less than 0.020 seconds.

Respectfully, my answer of 0.01747358593219 was considerably more accurate than Geezers at being less than 0.020  ::)
 

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