A "visual illusion" is when something you see tricks your brain into perceiving it in a way that is different from reality.
Sentences with «visual illusion»
She has been devoted to work in visual illusion for over twenty years. (hatchfund.org)
Individuals with a smaller primary visual cortex perceived a much more pronounced visual illusion than those individuals with a larger visual cortex. (scientificamerican.com)
The Leaning Tower Illusion — which won first prize in the Neural Correlate Society's Best Visual Illusion of the Year Contest in 2007 — reveals the way in which the visual system uses perspective to help reconstruct 3 - D objects. (scientificamerican.com)