Helping the color blind see their missing colors
kerrr at CRYPTIC.RCH.UNIMELB.EDU.AU
Wed Jun 12 23:07:26 EST 1996
>Nevin J. Miller, III is an intereting case. He says he is color blind.
>I would agree with him, but he is *different*. His color blindness is
>not a simple red-green or blue-yellow case. The color that he has
>the most difficult with is purple. He confuses or mixes red-blue and
>yellow-green. His special circumstance has lead to an interesting result.
>As you know the opponent-process model says the stimulation by one color
>inhibits another. The special correlational nature of the stimulation is
>sent to the back top of the visual cortex for processing into color
>perception. The correlationald opponent-processing model using wavelets
>suggested to me that it was possible in principle to see colors you were
>missing if you were color blind.
>When the opportunity arose, I showed Nevin Miller the subjective color
>illusion. By rotating a black and white disk in florescent lightand timing
>the speed carefully one can see colors. For the first time in Nevin's life
>he reported seeing a color that he has never seen before. It was to me
>a bright blue-purple.
>Nevin has reported a willness to be a subject. I suspect that by using
>positron emission tomography that his report of purple stimulation will
>be identical to controls. Nevin lives in the Allentown, Pennsylvania
>area. Are you interested in doing the research?
>Ron Blue rcb1 at lex.lccc.edu
I can't offer to do the research (the commute would kill me ) but I found
this to be a really interesting post. How has the subjects
'colour-blindness' been assessed ? The tests that I am familiar with only
test red-green and blue-yellow. Would you explain the details of the black
and white disc approach. I think that its quite fascinating.
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