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> I speculate color is coded https://en.wikipedia.org/wiki/Color https://en.wikipedia.org/wiki/Color: “Color (American English) or colour (Commonwealth Englis

> I speculate color is coded https://en.wikipedia.org/wiki/Color https://en.wikipedia.org/wiki/Color: “Color (American English) or colour (Commonwealth English) is the visual perception based on the electromagnetic spectrum.” ⇒ colors aren’t coded; they are created in the brain. Outside it, all there is are light spectra. > Or rather, the brain assumes that spatial frequencies coincident with the cell spacing are most probably because the object is that color, not because the object is weirdly striped as black and white in exactly the same pattern as the retina. So, how do you explain that subjects do not change in colour when you move closer to them or further away, or when you divert your gaze (cone cell spacing is far from uniform across the retina)?

vanattab 3y ago
They do actually. You have very poor short wavelength cone sensitivity in the fova precisely because of the low density of s cones
MauranKilom 3y ago
> So, how do you explain that subjects do not change in colour when you move closer to them or further away, or when you divert your gaze (cone cell spacing is far from uniform across the retina)? To be clear, this is not a rejection of the theory, because your brain does a lot of magic to make color (or even object) perception "stick" as things move in and out of peripheral vision. See for example: https://en.wikipedia.org/wiki/Filling-in https://en.wikipedia.org/wiki/Filling-in https://en.wikipedia.org/wiki/Lilac_chaser https://en.wikipedia.org/wiki/Lilac_chaser https://en.wikipedia.org/wiki/Color_constancy https://en.wikipedia.org/wiki/Color_constancy https://en.wikipedia.org/wiki/Memory_color_effect https://en.wikipedia.org/wiki/Memory_color_effect
- Someone 3y ago
  Yes, but not to the extent this theory would predict. If “the brain assumes that spatial frequencies coincident with the cell spacing are most probably because the object is that color, not because the object is weirdly striped as black and white in exactly the same pattern as the retina”, an object perceived as red from 4 meters away would be perceived as purple from 2 meters away (or vice versa), and as yellow from 3 meters distance (the visible light spectrum roughly is from 400nm to 800nm) And that would apply to all objects.
  - IIAOPSW 3y ago
    No it wouldn't. An actually red object would have the exact same red-cone spatial pattern no matter how far away it is, because the pattern is coming from inside the retina not from the object itself. An actually weirdly striped black and white object with the exact same pattern as the retina would behave like you said.

vanattab 3y ago

They do actually. You have very poor short wavelength cone sensitivity in the fova precisely because of the low density of s cones

MauranKilom 3y ago

> So, how do you explain that subjects do not change in colour when you move closer to them or further away, or when you divert your gaze (cone cell spacing is far from uniform across the retina)? To be clear, this is not a rejection of the theory, because your brain does a lot of magic to make color (or even object) perception "stick" as things move in and out of peripheral vision. See for example: https://en.wikipedia.org/wiki/Filling-in https://en.wikipedia.org/wiki/Filling-in https://en.wikipedia.org/wiki/Lilac_chaser https://en.wikipedia.org/wiki/Lilac_chaser https://en.wikipedia.org/wiki/Color_constancy https://en.wikipedia.org/wiki/Color_constancy https://en.wikipedia.org/wiki/Memory_color_effect https://en.wikipedia.org/wiki/Memory_color_effect

Someone 3y ago
Yes, but not to the extent this theory would predict. If “the brain assumes that spatial frequencies coincident with the cell spacing are most probably because the object is that color, not because the object is weirdly striped as black and white in exactly the same pattern as the retina”, an object perceived as red from 4 meters away would be perceived as purple from 2 meters away (or vice versa), and as yellow from 3 meters distance (the visible light spectrum roughly is from 400nm to 800nm) And that would apply to all objects.
- IIAOPSW 3y ago
  No it wouldn't. An actually red object would have the exact same red-cone spatial pattern no matter how far away it is, because the pattern is coming from inside the retina not from the object itself. An actually weirdly striped black and white object with the exact same pattern as the retina would behave like you said.