Quote:
Originally Posted by sirius0
Off topic but there has recently been some studies of people with inactive cones seeing a simplified colour set with rods! The reason rods have been asociated with black & white is because they turn on at much lower intensities than cones; but they don't become colour active until intensities that would turn on cones anyway. Once the cones turn on they drown out the colour info from the rods. Therefore it has now been assumed that dogs see in colour too!
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This article states dogs do have cones, but only about 1/10th the number as ours.
There is a lot of processing our brains do regarding color. For instance, the actual sensitivity of our "blue" cone is very poor compared to our other two. However, thanks to our processing ability, blue is boosted to a comparable level with the others.
Rods, I think, can also contribute somewhat to how we see color. I believe this comes into play within the midrange between weak and strong light intensities. This is the mesopic range, between the scotopic and photopic ranges. I am unsure of this, admittedly.