What color do we see when we close our eyes?
Channel: romel andoy
Date: 2021-11-28

What color do we see when we close our eyes?


When you close your eyes, it is the eyelids you're closing. Not the eyes.
Because through the help of your eyelids you obstruct light from entering your eyes and pass to the retina, which contains nerve endings that are sensitive to light. When excited, they send nerve signals to the brain, which, in turn, interprets them as images.
But when you pull the curtains everything goes into darkness. Unless you are facing a bright light, when you can see the red color of the curtain - this is because your eyelids are rich in blood vessels, and you are actually seeing through your eyelids, seeing the color of your own blood.
As opposed to what most people say, it’s not black that we see when we close our eyes. The color we see when we closed our eyes is called Eigengrau. The difference between black and Eigengrau is their hex values. Of course, we sometimes see many colors other than black when we close our eyes.
The visual area of your brain does not shut off simply because you close your eyes.
The lights you see represent random discharges of visual cells.
You will also see these lights when you rub your eyes since the nerve responds to pressure with the experience of vision.
However, because retinal receptors adapt to constant input- in this case, to constant darkness- if your eyes remain closed for a long time,  your eyes stop signaling the brain.
Now, although your eyes have stopped signaling vision in the brain, other brain structures take over and provide you with the visual requirements for a dream. Although you are not seeing with your eyes, during dream sleep, they rapidly move from side to side.
Most people see splashes of colors and flashes of light on a not-quite-jet-black background when their eyes are closed. It's a phenomenon called Phosphene. A phosphene is a phenomenon of seeing light without light entering the eye.  Phosphenes that are induced by movement or sound may be associated with optic neuritis.  Phosphenes can also be induced by mechanical, electrical, or magnetic stimulation of the retina or visual cortex, or by random firing of cells in the visual system.