The use of the cancellation technique to quantify the Hermann grid illusion.

When observers view a grid of mid-gray lines superimposed on a black background, they report seeing illusory dark gray smudges at the grid intersections, an effect known as the Hermann grid illusion. The strength of the illusion is often measured using the cancellation technique: A white disk is pla...

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Bibliographic Details
Main Authors: Piers D L Howe, Margaret S Livingstone
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2007-02-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC1800350?pdf=render