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removed the "red" sensitive cone. Now what happens if we remove one
of the two remaining kinds of cones? What does our "normal" color
solid look like through totally colorblind eyes?
Scroll down for the answer. |
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"Blue" sensitive cones "Green" sensitive cones no "red" sensitive cones |
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"Green" sensitive cones no "red" sensitive cones |
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no "green" sensitive cones no "red" sensitive cones |
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In totally colorblind vision, all perceived "colors" can be rank ordered one-dimensionally. We see two of the
three possibilities; we see vision having green sensitive cones only and
vision having blue sensitive cones only. In both cases, three
groups of nine each cubes appear identically colored. But they're
different sets of nine, depending on which type cone is doing the detecting.
In both cases, two of the three dimensions of color have vanished, and
one dimensional arrays "span the space" of the colorblind vision.
The one dimension in the "green"-cone vision is the vertical dimension.
The one dimension in the "blue"-cone vision is the front-to-rear dimension.
Just what does color perception show us?
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