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The Müller-Lyer illusion in interpolated figures

V Di Maio¹, P Lánský

¹Institute of Cybernetics, Italian National Research Council, Arco Felice, NA, Italy. vdm@biocib.cib.na.cnr.it

Perceptual and Motor Skills

|December 8, 1998

Summary

The Müller-Lyer illusion

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Area of Science:

Visual perception
Psychophysics
Computational neuroscience

Background:

The Müller-Lyer illusion is a well-known optical illusion.
Previous research has explored various factors influencing the illusion's magnitude.

Purpose of the Study:

To investigate the effect of the number of dots forming Müller-Lyer patterns on the illusion's magnitude.
To test a model based on Image Function theory.

Main Methods:

Müller-Lyer patterns constructed from discrete dots were used as visual stimuli.
The number of dots in the arrowhead components was systematically varied.

Main Results:

An increase in the number of dots forming the arrowheads led to a greater magnitude of the Müller-Lyer illusion.
This finding aligns with predictions from the Image Function theory model.

Conclusions:

The number of dots composing visual figures influences the Müller-Lyer illusion.
Image filtering is a key mechanism in the formation of this visual illusion, as suggested by the Image Function theory.

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