Yes..it IS possible. Try it yourself. Among spelunkers it is a well known phenomena that they can see their hands waving in front of them when in a completely dark cave. Oddly enough the effect doesn't work with other people's hands. Or at least when they're not told about it. Knowing hands are being waved seems to make them appear slightly. Why is there no science on this? I DID find this blogger talking about it. He too is dismayed how ignored this phenomenon is by science. My hands tend to be bluish and ghostlike when I wave them over my closed eyes. Others experience different colors like reddish brown. http://schwitzsplinters.blogspot.com/2007/05/with-your-eyes-closed-can-you-see-your.html Please Register or Log in to view the hidden image!