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Related Experiment Video

Updated: Mar 16, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Convexity Bias and Perspective Cues in the Reverse-Perspective Illusion.

Joshua J Dobias¹, Thomas V Papathomas², Vanja M Vlajnic³

¹Department of Psychology and Counseling, Marywood University, Scranton, PA, USA.

|August 3, 2016

Summary

This study investigated how visual cues affect 3D perception. Stronger linear perspective cues and fixation on concave areas enhanced the reverse-perspective illusion, influencing depth perception.

Keywords:

Three-dimensional shape convexity bias fixation location linear perspective reverse perspective visual context

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Last Updated: Mar 16, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

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Published on: April 16, 2014

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Published on: May 23, 2019

Area of Science:

Visual Perception
Cognitive Psychology
3D Object Recognition

Background:

Human perception of three-dimensional (3D) objects and scenes is influenced by visual cues like linear perspective and convexity bias.
Understanding these influences is crucial for fields ranging from computer vision to art and design.

Purpose of the Study:

To examine the impact of painted linear perspective cues on 3D perception.
To investigate the role of convexity bias in depth perception using a reverse-perspective illusion.
To determine how stimulus type and fixation point interact to affect the perception of depth.

Main Methods:

A 2x2 experimental design was employed using reverse-perspective stimuli.
Two types of stimuli were used: one with painted linear perspective cues and one with blank surfaces.
Fixation marks were placed on locally convex or concave regions of the stimuli.

Main Results:

The reverse-perspective illusion, a depth-inversion phenomenon, was significantly stronger when stimuli featured pronounced linear perspective cues.
Fixating on a locally concave region within the stimulus also intensified the reverse-perspective illusion.
The interaction between stimulus type and fixation location influenced the magnitude of the depth-inversion illusion.

Conclusions:

Painted linear perspective cues play a significant role in modulating the strength of the reverse-perspective illusion.
Convexity bias, specifically fixation on concave regions, contributes to the depth-inversion effect.
These findings advance our understanding of how visual cues are integrated to construct 3D percepts.