Our eye networks can be made to see a living shade of green blue
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Five people have seen an unprecedented blue green color before humans, thanks to a device that may one day be able to have a kind of color blindness to experience a typical vision.
We realize the color across the retina in the back of the eye, which usually contains three types of conical cells that discover light-called S, M and L-that absorbs a group of blue, green or red light, respectively, then send signals to the brain. When we see anything on the green blue end of the visible spectrum, at least two types of cone cells are activated at the same time because there is some overlap in the wavelengths they discover.
Nangram At the University of California, Berkeley, I wondered about the color of the people that it will ignite if only one type of cone is activated in this part of the spectrum. It was inspired by a device called OZ, which was developed by other researchers studying how the eye works, which uses a laser capable of stimulating one conical cell.
NG and its colleagues, including the scientists who built OZ, upgraded the device so that it can connect the light to a small square area of about 1,000 conical cells in the retina. NG says that stimulating one conical cell does not generate enough signal to urge color visualization.
The researchers tested the version that was promoted on five people, which stimulates only the M conic in this small area of one eye, while the other was closed. Participants said they saw a green blue color, which the researchers called it, and that was more intense than anything they had seen before. “It is difficult to describe, it’s very cool,” says Nug, who watched Olu.
To check these results, the participants have taken the color matching test. Both Olo and the second color that can adjust it via a disk has been shown to any shadow on the standard visual spectrum, so that Olo coincides as much as possible. All of them have been connected until it was an intense color, which supports them as Olo’s vision as they described.
In another part of the experiment, the participants used a tablet to add white light to Olo or TEAL live to match them. All participants have diluted Olo, which supports him being more intense in the shadows.
Andrew Stockman At College University London describes the research as “a kind of fun”, but with possible medical effects. For example, the device can one day be able to suffer from red and green blindness, and who find it difficult to distinguish between these colors, the experience of a typical vision. This is because the condition is sometimes caused by the activation of both M and L with a very similar wavelength of light. Stockman says that motivating one of them over the other can enable people to see a wide range of shadows, although this must be tested in experiments.
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