Jump to ContentJump to Main Navigation
The Oxford Compendium of Visual Illusions$
Users without a subscription are not able to see the full content.

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

Show Summary Details
Page of

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 Oppel–Kundt Illusion

The Oppel–Kundt Illusion

(p.303) Chapter 35 The Oppel–Kundt Illusion
The Oxford Compendium of Visual Illusions

Jiří Wackermann

Oxford University Press

A line segment, subdivided into smaller parts, appears longer than an undivided line segment of the same length. This phenomenon is known as “Oppel–Kundt illusion,” also named “illusion of interrupted extent” or “filled space illusion,” is a classic example of so-called “geometric-optical illusions.” It was described about 150 years ago but it is still insufficiently explored and not well understood. This chapter provides an overview of the research into the Oppel–Kundt illusion, summarizes the most important empirical findings and explanatory approaches, and points out relations to other illusory phenomena. The chapter also discusses results of recent original research.

Keywords:   Oppel–Kundt illusion, geometric-optical illusion, filled space illusion, illusion of interrupted extent

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .