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If it is pitch black or dark at night and you close your eyes why can you see little bright coloured dots like static. And if you look in the middle sometimes you can see like horizontal lightning bolts that come closer.Why do we get this?
A phosphene is an entoptic phenomenon characterized by the experience of seeing light without light actually entering the eye ... Phosphenes can be directly induced by mechanical, electrical, or magnetic stimulation of the retina or visual cortex as well as by random firing of cells in the visual system.
And when you are in a really quiet place where there is no sound whatsoever why is it that if you listen you can hear like a ringing noise in your ears?
The term "tinnitus" usually refers to more severe cases. Heller and Bergman (1953) conducted a study of 100 tinnitus-free university students placed in an anechoic chamber and found that 93% reported hearing a buzzing, pulsing or whistling sound.