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Some women have superhuman 'rainbow vision'

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Some women have superhuman 'rainbow vision'

Post by Cloud on Wed Nov 28, 2018 11:44 pm

A common genetic mutation has given many women the ability to see more colors than the rest of us.
Artist Concetta Antico, a woman whose remarkable ability to see additional colors has earned her the nickname 'the woman with rainbow vision', is one example of a tetrachromat - a person whose eyes have four color receptors instead of the usual three.

Now scientists investigating the phenomenon have revealed that the genetic mutation which gives rise to these abilities might actually be a lot more common than is generally believed and that most women who do possess 'rainbow vision' simply lack the training to take advantage of it.

Most of them probably aren't even aware that they have superhuman color vision at all.

To determine this, the researchers, who were led by Kimberly Jameson from UC Irvine, compared Antico's color perception with that of another tetrachromat and a person with normal vision.

The results indicated that Antico was far more sensitive to colors than the other two - including the other tetrachromat - and that this was likely due to her training as an artist.

By training other tetrachromats in the same way, the researchers concluded, it may be possible to help others with this unique genetic trait to realize the full potential of their enhanced vision as well.




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Re: Some women have superhuman 'rainbow vision'

Post by Dragon on Fri Nov 30, 2018 9:37 am

The normal explanation of tetrachromacy is that the organism's retina contains four types of higher-intensity light receptor (called cone cells in vertebrates as opposed to rod cells, which are lower intensity light receptors) with different absorption spectra.

This means that the animal may see wavelengths beyond those of a typical human being's eyesight, and may be able to distinguish between colors that, to a normal human, appear to be identical. Species with tetrachromatic color vision may have an unknown physiological advantage over rival species.

Some species of birds, such as the zebra finch and the Columbidae, use the ultraviolet wavelength 300–400 nm specific to tetrachromatic color vision as a tool during mate selection and foraging.

In areas where reindeer live, the sun remains very low in the sky for long periods. This means the light is scattered such that the majority of light that reaches objects is blue or UV. Some parts of the environment absorb UV light and therefore to UV-sensitive reindeer, appear to be black, strongly contrasting with the snow.

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Re: Some women have superhuman 'rainbow vision'

Post by Cloud on Fri Nov 30, 2018 5:41 pm

Dragon wrote:The normal explanation of tetrachromacy is that the organism's retina contains four types of higher-intensity light receptor (called cone cells in vertebrates as opposed to rod cells, which are lower intensity light receptors) with different absorption spectra.

This means that the animal may see wavelengths beyond those of a typical human being's eyesight, and may be able to distinguish between colors that, to a normal human, appear to be identical. Species with tetrachromatic color vision may have an unknown physiological advantage over rival species.

Some species of birds, such as the zebra finch and the Columbidae, use the ultraviolet wavelength 300–400 nm specific to tetrachromatic color vision as a tool during mate selection and foraging.

In areas where reindeer live, the sun remains very low in the sky for long periods. This means the light is scattered such that the majority of light that reaches objects is blue or UV. Some parts of the environment absorb UV light and therefore to UV-sensitive reindeer, appear to be black, strongly contrasting with the snow.

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