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Upper-Wolf6040 t1_iuct7nw wrote

The brain and how it perceives colours is an interesting thing. Take magenta for example, in reality that colour doesn't exist but it's our brains filling it un to make sense for us. Also the colour yellow is seen by everyone differently as our eyes only have red, blue and green rods so it takes information from the green and red cones and fills in the blanks. I'm sure I read somewhere that goldfish have yellow rods un their eyes so can truly see what the colour yellow us. Also look up about impossible colours, it's fascinating what our brains do and how we perceive what we "see" is just the brains interpretation of data/information.

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bugi_ t1_iucuv6v wrote

The brain doesn't fill anything in. It has 3 possible inputs from the 3 rod types. What we call colors are just combinations of those inputs.

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Upper-Wolf6040 t1_iud2a5z wrote

Perhaps saying "interprets" rather than "fills in" is more accurate when talking about colours. Either way the brain processes that information and what we "see"is the result. Also I think it's cones that are more to do with colour rather than rods so I got mixed up with that.

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Randomcheeseslices t1_iucwu8r wrote

The brain fills in all kinds of information. Not just colours.

For instance, our eyes have multiple blindspots. But the brain fills in the details - by making em up.

Want to test that? Hold both your thumbs straight out. Look at the left one. Slowly move your right one to the right. And OMG did it disappear? Surely not? No, thats the blindspot where the optic nerve meets your eye.

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foersom t1_iud61j0 wrote

I tried, the right one never disappeared.

A better test. With both eyes open you do not see your nose. Close one of your eyes and you nose appear.

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Martin_RB t1_iufkawc wrote

Then congrats you are the first of your kind biological anomaly and researchers would love to dissect your eye...or you did it wrong.

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