Go to this link to see an example of how we dont....
http://www.patmedia.net/marklevinson/co ... usion.html
Do we really see what we think we see?
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- Stan
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Do we really see what we think we see?
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- formerly known as hf
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That one's down to the 'spots before you eyes' effect that you get after looking at a bright point of light - each pink dot leaves a very faint retinal 'ghost', which you only notice if it switches off or you look at something else (the illusion ends immediately you change where your eyes are looking, even slightly)
The ghost is also green (I'm not sure why ghost spots are inverted colours...). Eventually the eye gets lazy from focusing on the same point, and the pink dots become more and more faint, as a form of tunnel vision sets in. The retinal burn stays as strong though, looking like a green dot rotationg around a blank space around the focal point of the cross.
I'm such a nerd...
The ghost is also green (I'm not sure why ghost spots are inverted colours...). Eventually the eye gets lazy from focusing on the same point, and the pink dots become more and more faint, as a form of tunnel vision sets in. The retinal burn stays as strong though, looking like a green dot rotationg around a blank space around the focal point of the cross.
I'm such a nerd...
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