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. 2024 Nov 5;15(6):20416695241286787.
doi: 10.1177/20416695241286787. eCollection 2024 Nov-Dec.

Partial object doubling in the periphery induced by negative afterimages

Ian M Thornton  1 , Anna Riga  1
Affiliations

Partial object doubling in the periphery induced by negative afterimages

Ian M Thornton et al. Iperception. .

Abstract

We describe a new phenomenon-partial object doubling-in which the perceived contours of peripherally viewed moving targets become distorted and duplicated. The effect appears to arise due to interactions between physically drawn contours and the strong negative afterimages that are dynamically released during stable viewing of the displays. An online demo is provided where the effect can be experienced and relevant parameters manipulated.

Keywords: furrow illusion; global position; local motion; negative afterimages; visual illusions.

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Conflict of interest statement

The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Movie 1.
Movie 1.
Partial object doubling. https://maltacogsci.org/POD/POD_Movie1.html
Movie 2.
Movie 2.
Negative afterimages and partial object doubling. https://maltacogsci.org/POD/POD_Movie2.html
Movie 3.
Movie 3.
Blocking of negative afterimages disrupts partial object doubling. https://maltacogsci.org/POD/POD_Movie3.html
Movie 4.
Movie 4.
Partial object doubling without illusory motion. https://maltacogsci.org/POD/POD_Movie4.html
See this image and copyright information in PMC

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