What is Eigengrau..?

Eigengrau (German: "intrinsic gray"), also called Eigenlicht ("intrinsic light"), dark light, or brain gray, is that the color seen by the attention in perfect darkness and this is often said to be the results of visual signals from optic nerves. Even within the absence of light, some action potentials are still sent along the optic nerve, causing the feeling of a consistent dark gray color.

       Eigengrau is perceived as lighter than a black object in normal lighting conditions, because contrast is more important to the sensory system than absolute brightness. For instance, the night sky looks darker than eigengrau due to the contrast provided by the stars. Eigengrau are often consciously controlled and became shapes like circles and crosses.

      German philosopher and physicist Gustav Theodor Fechner is believed to possess investigated and popularized the term Eigengrau. He's also known for his key role within the genesis of the measurement of human perception. Being an early pioneer in experimental psychology, he founded psychophysics and is believed to possess inspired most of the 20th-century philosophers and scientists.

     What is the darkest colour a person's has ever seen? For many people, the apparent answer would be black. More specifically, the blackness of lightlessness. After all, black by definition is that the absence of light. But total lightlessness isn’t as far as humans can think.

     Eigengrau is professed to be lighter than a black object when normal lighting conditions exist. That's because; the contrast in light is more significant to the sensory system than complete brightness.

    Continuous experiments on rod cells of cane toads, scientifically referred as Bufo marinus, highlight that the frequency of those impulsive events is temperature-dependent which means they're caused by the thermal isomerization of rhodopsin. Scientists believe that Eigengrau are often checked out as both a biological and a psychological phenomenon. Scientists have also determined that different people perceive Eigengrau differently and there are possibly several variations of the ‘Opaque Gray’. Therefore, every individual will have his own appreciation of Eigengrau.

via ststworld