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Related Experiment Video

Updated: Dec 12, 2025

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

When illusions merge.

Aline F Cretenoud¹, Gregory Francis², Michael H Herzog¹

¹Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Journal of Vision

|August 9, 2020

Summary

This summary is machine-generated.

Susceptibility to visual illusions like the vertical-horizontal and Müller-Lyer is influenced by illusion-specific factors. These factors combine independently to explain the overall visual structure of illusions.

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Area of Science:

Visual Perception
Cognitive Psychology
Psychophysics

Background:

Previous research indicated weak correlations between different visual illusions.
Stronger correlations were observed among variants of the same illusion, suggesting illusion-specific factors.

Purpose of the Study:

To investigate the relationship between factors underlying the vertical-horizontal, Müller-Lyer, and Ponzo illusions.
To determine if susceptibility to merged illusions can be predicted by individual illusion susceptibilities.

Main Methods:

Two experiments were conducted with 306 and 98 participants, respectively.
Participants' susceptibility to individual illusions and merged illusions (combinations of two) was measured using an adjustment procedure.
Path analyses, correlations, and exploratory factor analyses were employed.

Main Results:

Susceptibility to merged illusions was well predicted by the susceptibilities to the individual component illusions.
Findings support the existence of distinct, illusion-specific factors.

Conclusions:

The visual space of illusions is structured by illusion-specific factors.
These factors combine independently to account for the overall visual structure underlying illusions.