Our retina can be made to see a vivid shade of blue-green
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Five people have seen a deep green-blue color that has never been seen before humans, thanks to a device that can one day enable people who can enable a type of color to experience a specific vision with blindness.
We experience color through the retina behind the eye, which usually consists of three types of light-stamped cone cells-which are called S, M and L-which absorb a series of blue, green or red lights respectively, and then send a signal to the brain. When we see anything at the blue end of the visible spectrum, at least two types of cone cells are active at the same time because they have some overlap in wavelengths that they detect.
Rain ng At the University of California, Berkeley, surprised, was surprised as to what color people would experience when only one type of cone is active in this part of the spectrum. She was inspired by a device called oz, developed by other researchers how the eyes work, which uses a laser capable of stimulating single cone cells.
NG and their colleagues, including scientists who produced oz, upgraded the device, so that it could give light to a small square patches of about 1000 cone cells in the retina. NG says that a single cone does not indicate enough to stimulate a cone cell to stimulate the cell.
Researchers tested an advanced version on five people, stimulating only M cone in this small area of one eye, while the other was closed. The participants stated that they saw a blue-green color, which the researchers had called the OLO, which was more intense than that was already seen. “It is difficult to describe; it’s great,” NG says, who has also seen Olo.
To verify these results, the participants took a colorful test. Each saw the OLO and each other color, which they can tune through a dial for any shade on the standard visible spectrum, until it matches as closely as possible with the OLO. They all dials until it was a deep chaiti color, which supports them as Olo as described.
In another part of the experiment, the participants used a dial, until they match even more closely, the OLO or a dial to add white light to a vivid chaiti. All participants diluted the OLO, which supports the two colors being more intense.
Andrew Stockman London at University College described research as “fun”, but with potential medical implications. For example, the device one day can enable people with red-green-colored blindness, who find it difficult to distinguish between these colors, finding it difficult to experience specific vision, they say. This is because the situation is sometimes caused by M and L cones, both are activated by the wavelengths of light which are very similar. Stockman says that stimulating each other may be able to see people a wide range, although it needs to be tested in tests.
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