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Yeah, our vision is calibrated around blue and yellow - knowledge about the color blue is in our DNA.
by dumpsterdiver 2y ago
Yeah, our vision is calibrated around blue and yellow - knowledge about the color blue is in our DNA.
- xxr 2y agoHow do you figure “blue and yellow” instead of “blue and red and green” or “magenta and green” or “red and cyan”?
- crazygringo 2y agohttps://en.wikipedia.org/wiki/Opponent_process#Neurological_basis https://en.wikipedia.org/wiki/Opponent_process#Neurological_... It's a well-known color model that evidence shows describes the actual color processing in our brain.
- carlosjobim 2y agoThis theory is wrong, because there is no magenta light on the real light spectrum. The colour spectrum is perceived as a wheel/circle in our minds, but it is a straight line in physical reality. Thus, these opposites are imaginary and not real.
- seba_dos1 2y ago...and how exactly is this relevant? We perceive colors, not wavelengths.
- carlosjobim 2y agoTell me: how would the colour cyan be possible for the brain to perceive, if the neurons deduct hue from inverting the sensory input from the cones?
- seba_dos1 2y agohttps://upload.wikimedia.org/wikipedia/commons/4/4c/Color_perception.svg https://upload.wikimedia.org/wikipedia/commons/4/4c/Color_pe... ???
- carlosjobim 2y agoExplain what you mean? The color cyan exists on the physical spectrum, but the color magenta does not. Meaning, if colours are perceived inversely, then how would the color magenta physically enter the eye to be inverted to cyan? Or if colours are perceived opposite as in that theory, then why not double inverted or ten times inverted between the eye and the brain?
- seba_dos1 2y agoHave you even read what "opponent process" means? Cyan is perceived when both red-green and yellow-blue channels exhibit about the same negative response. It should be clear from the article linked above and the chart I gave you.
- carlosjobim 2y agoI've read the article, and the theory is incredibly dubious and most likely false: "There is some overlap in the wavelengths of light to which the three types of cones (L for long-wave, M for medium-wave, and S for short-wave light) respond, so it is more efficient for the visual system (from a perspective of dynamic range) to record differences between the responses of cones, rather than each type of cone's individual response." That's a ridiculous argument. "That is, either red or green is perceived and never greenish-red: Even though yellow is a mixture of red and green in the RGB color theory, the eye does not perceive it as such." Say what? Yellow is both a real physical wavelength, or a perception of red and green light mixed. "In 1970, Solomon and Corbit expanded Hurvich and Jameson's general neurological opponent process model to explain emotion, drug addiction, and work motivation." Bullshit detector bell ringing... "A 2023 opinion essay of Conway, Malik-Moraleda, and Gibson claimed to "review the psychological and physiological evidence for Opponent-Colors Theory" and bluntly stated "the theory is wrong"." Finally some sensible people. Their article is pretty good: https://pmc.ncbi.nlm.nih.gov/articles/PMC10527909/ https://pmc.ncbi.nlm.nih.gov/articles/PMC10527909/