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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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Low-Level Motion Illusions

Low-Level Motion Illusions

Chapter:
(p.467) Chapter 63 Low-Level Motion Illusions
Source:
The Oxford Compendium of Visual Illusions
Author(s):

Stuart Anstis

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199794607.003.0063

Visual motion stimuli can be defined as changes in luminance over space and time. Both kinds of change can alter the perceived speed and direction of motion. This chapter covers crossover motion; reverse phi, in which motion between a positive and a negative appears to go backward; the bicycle spokes illusion; the footsteps effect, in which smooth movement looks jerky if the background is striped; zigzag motion, whose direction appears to change with viewing distance; and the furrow illusion of motion, whose direction appears to change when viewed by the fovea versus the periphery. Other concepts covered include the chopstick illusion and the footsteps illusion.

Keywords:   motion perception, apparent motion, footsteps illusion, chopstick illusion

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