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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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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 28 September 2021

The Wobbling Face Illusion

The Wobbling Face Illusion

(p.648) Chapter 93 The Wobbling Face Illusion
The Oxford Compendium of Visual Illusions

Sayako Ueda

Akiyoshi Kitaoka

Oxford University Press

This chapter introduces a novel type of illusion produced by duplicating facial parts, called the Wobbling Face illusion, which causes an unstable feeling for many observers. Four experiments intended to characterize the illusion are examined. In Experiments 1 and 2, the results indicated that the Wobbling Face illusion should be specific to the face, and the unstable feeling may arise from rivalry of perception between doubled facial features. Experiment 3 showed that this illusion was the strongest when eyes were duplicated. Experiment 4 suggested that the unstable perception of this illusion did not reflect retinal slips or eye movement instabilities. Thus this face-specific illusion is not a simple motion illusion but might be based on attention instability.

Keywords:   eye movement, face-specific illusion, Wobbling Face illusion, duplicating facial parts, attention instability

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