sciam.com — The color vision of humans and some other primates differs from that of nonprimate mammals. Analyses of primate visual pigments show that our color vision evolved in an unusual way and that the brain is more adaptable than generally thought.
Mar 16, 2009 View in Crawl 4
hetmanMar 16, 2009
Why? If they are able to survive and pass on there genes why do they need to see like primates?
hetmanMar 16, 2009
Intersting. How we see color has always been really interesting to me. I am not colorblind but when you take the color blind test it is really difficult for me. I always wondered if it was just me or is it difficult for everyone? I think I have some type of minor colorblindess.
williepepperMar 16, 2009
Another slow news day on Digg.
skylardMar 16, 2009
This reminds me of this article about tetrachromat women.<a class="user" href="http://www.post-gazette.com/pg/06256/721190-114.stm" rel="nofollow">http://www.post-gazette.com/pg/06256/721190-114.st ...</a>As a man I only recognize black, grey, white, the 7 rainbow colors plus it's 2 variants light and dark.It's up to the women to name the other 16 million colors or more.
norman619Mar 16, 2009
jamangold:No it's not just that. For example I can see the UV color on things like flowers. I had no idea I was seeing UV until my high school zoology class. Until then I assumed everyone was able to see it. They have a name for this. It's called Tetrachromacy. It's pretty rare and more common in women than in men. People with this can see 4 different channels of color. In my case I can see UV. Others have been documented being able to see IR.Not sure why I got dugg down.
kakazeMar 16, 2009
No, they're gray.
inajeepMar 17, 2009
Except they aren't his words. They are monks and bishops and rooks and what not who tried to shape the story into their own. I know, I'm too literal. JohnnyXmas's post was funnier.
simbaitNov 13, 2009
Interesting ... also how do bird's brain represent colours? Humans seem to represent them akin to a convex combination of the three colours, eg. a triangle, slightly non linear due to higher sensibility of blue/UV in presence of Red but not green (purple colour). This gives 3 primary colours (R,G,B), 3 secondary (Y,M,C) and 1 tertiary (white) .Do bird have still a bi-dimensional 4 colour convex combination or a tensor one (4 secondary colours) or have a three dimensional tetrahedral combination, 4, primary colours (R,G,B, U) giving 6 secondary colours (Y=R-G,M=R-B,C=G-B,R-U, G-U, B-U) and 4 tertiary colours (R-G,B, R-G-U, R-B-U, G-B-U) and one quaternary (white)?
chikkychappyJan 28, 2010
norman:how does UV "look like"? i'm interested because it will have some implications on qualia and the mind.i really hope you'd reply even though this is a rather old comment. thanks.