When I look at a dark part of my room long enough, a black darkness begins to form and grow bigger until I break sight or blink.
Ever since I was a youngin I'd look at dark sections of my room and after awhile the darkness would begin to 'grow'. It would disappear after breaking sight with it and I could see that part of the room after doing so.
Whats really happening here exactly? Would it be something to do with the eyes or the brain? Maybe both.
Has anyone had similar experiences or is it all in my head!