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Related Experiment Video

Updated: Jun 22, 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

Illusory position shift induced by cyclopean motion.

Ikuya Murakami¹, Yasuhiro Kashiwabara

¹Department of Life Sciences, University of Tokyo, Tokyo, Japan. ikuya@fechner.c.u-tokyo.ac.jp

Vision Research

|June 2, 2009

Summary

This summary is machine-generated.

Visual motion causes an illusory position shift, even with motion defined solely by binocular correlations. This cyclopean motion

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Area of Science:

Visual perception
Neuroscience
Computational vision

Background:

The illusory position shift is a known phenomenon in visual perception.
This illusion can be triggered by both luminance-defined (first-order) and contrast-defined (second-order) motion.

Purpose of the Study:

To investigate if motion defined solely by binocular correlations (cyclopean motion) can induce an illusory position shift.
To compare the magnitude of this illusion with those induced by first-order and second-order motion.

Main Methods:

Utilized a random-dot binocular correlogram to present a moving square-wave grating.
The motion stimulus was exclusively defined by binocular correlations, creating cyclopean motion.

Main Results:

Cyclopean motion was found to induce an illusory position shift.
The magnitude of the illusory position shift induced by cyclopean motion was smaller than that induced by first-order motion.

Conclusions:

The findings demonstrate that binocular mechanisms mediate the illusory position shift.
This study extends the understanding of motion-defined visual illusions and their underlying neural substrates.