The figure on this site was taken from:

Hamburger, K., Prior, H., Sarris, V. & Spillmann, L. (2006). Filling-in with colour: Different modes of surface completion. Vision Research, 46, 1129-1138.

Try this!


Fixate the central point strictly for a prolonged
period of time (e.g., 20 seconds) without blinking or any eye movements.
You should perceive filling-in after a few seconds, meaning that the central disk
will start to appear greenish or the whole pattern will appear in gray.


Website designed: 12-5-2005