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The Oxford Compendium of Visual Illusions$
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Arthur G. Shapiro and Dejan Todorovic

Print publication date: 2017

Print ISBN-13: 9780199794607

Published to Oxford Scholarship Online: June 2017

DOI: 10.1093/acprof:oso/9780199794607.001.0001

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The Rotating Tilted Lines Illusion

The Rotating Tilted Lines Illusion

Rotation Instead of Expansion—A Peculiar Case of Motion Misperception

Chapter:
(p.489) Chapter 66 The Rotating Tilted Lines Illusion
Source:
The Oxford Compendium of Visual Illusions
Author(s):

Simone Gori

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199794607.003.0066

This chapter describes the Rotating-Tilted-Lines illusion , which is a new motion illusion that arises in a circular pattern composed by black, radial lines tilted to the right and presented on a white background. When one approaches the stimulus pattern, the radial lines appear to rotate in the counterclockwise direction, whereas when one recedes from it, they appear to rotate clockwise. It is the simplest pattern able to elicit illusory rotatory motion in presence of physical radial expansion. This surprising misperception of motion seems to be a result of the competition between two motion processing units in the primary visual cortex (V1, V5)

Keywords:   motion; V1, V5, primary visual cortex, Rotating-Tilted-Lines illusion

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