ORCID

https://orcid.org/0009-0009-3827-377X

Degree

Bachelor of Science (B.S.)

Major(s)

Computer Science

Document Type

Immediate Open Access

Abstract

The Ebbinghaus illusion, also know as Titchner Circles, is a perceptual illusion that is typically presented as a two-dimensional set of disks. These disks are configured as a central disk surrounded by an annulus of smaller or larger disks. Numerous studies have found the illusion to have an effect on size perception, but fewer studies have analyzed its effects on depth judgments. This study utilized a head-worn virtual reality environment as well as a three-dimensional display to examine the effects of the Ebbinghaus illusion on relative depth judgments in a perceptual matching task. Findings indicated that Ebbinghaus configurations featuring an annulus composed of small disks elicited a greater misjudgment of depth than configurations featuring an annulus composed of larger disks in both the head-worn virtual reality environment and the three-dimensional display.

DOI

https://doi.org/10.54718/EIES8652

Date Defended

4-25-2025

Funding Source

National Science Foundation CAREER Program Grant 2337976

Thesis Director

Adam Jones

Second Committee Member

J.Edward Swan II

Third Committee Member

Christian Flow

Rights Statement

"Asymmetric Effects of the Ebbinghaus Illusion on Relative Depth Judgments in a Perceptual Matching Task", Copyright 2025 by Caden Thompson. My thesis may be used for non-profit educational and research purposes. Note that in addition to my own works of authorship, this thesis may contain and provide citations to third party content. If your use goes beyond fair use, you would need to contact those rights holders for additional licensing/permissions.

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