If you stare fixedly at this image... it will disappear
Because in Troxler fading the stimulus is perceptually replaced by whatever in the surrounding area rather than a black patch, it has been likened to the phenomena of blindspot filling-in (Ramachandran 1992). Thus, the conscious percept corresponding to the missing sensory input has been thought to be somehow "fillled in" at higher visual centers by interpolating from the surrounding visual areas. However, it is not certain whether local adaptation is an accurate account of what leads to the missing sensory input in the case of Troxler fading.
Know more: http://en.wikipedia.org/wiki/Troxler%27s_fading
Worked for me. Cool!
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