All the Colors That Human Vision Neglects

Fascinating studies. So it appears there are multiple reasons for our color vision to be the way that it is; hard to know what the initial reason was but the social signaling is probably the one that evolved to make sure we passed this trait on to our offspring.
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That is quite good, certainly, esp from a psycophysical standpoint...one would also logically conclude, e.g., that the logarithmic amplification effect of hair cells in the organ of Corti in the human cohclea as well as in other species must have similar preferential spectral sensitivity, on a purely evolutionary level...extrapolating the same concept, I'd expect all senses, whether touch, taste, or smell, must have similar differentiability of sensation...further, that all species would similarly differentiate evolutionarily on a sensitivity level...one would tend to wonder whether intelligence has a role in the extent of such differentiation, or whether such differentiation causes ultimate differences in intelligence per se...I need to reflect on that concept awhile, that was a good catch, certainly...e.g., in humans, there are very definitely light vs heavy touch receptors, though I've never seen any papers dealing with quantitative differences between them, I'll try to find them, they must exist, it was just never a focus on my part to seek out such material...on a purely molecular level, I'd expect taste buds as well as olfactory receptors probably similarly discriminate albeit on a purely molecular level, I'm aware of serious research on developing artificial small or olfaction, doubtless, you've seen such material also, however, I'd be curious how such material as covered here might influence such receptor differentiation there...then again, there was a focus here on cones, and their spectral sensitivity, as opposed to looking at rods, and their different grey scale sensitivities, I really would be curious to know if monochromatic vision has ever been similarly explored as well...that really warrants some serious thought....

Thank you for the interesting article share brother Tony