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Related Experiment Video

Updated: Mar 26, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

Orbiting Black/White Rays Produce an "Illusory" Gray Disk.

Stuart Anstis¹, Neal Dykmans¹, Sae Kaneko²

¹Department of Psychology, University of California, San Diego, USA.

|January 22, 2016

Summary

This summary is machine-generated.

An unexpected gray disk appears from an orbiting ray pattern. This visual effect offers insights into how the brain processes visual information over time, known as visual temporal integration.

Keywords:

Illusion motion perception temporal integration

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Area of Science:

Visual perception
Neuroscience
Psychophysics

Background:

Visual stimuli can create surprising perceptual effects.
Understanding visual temporal integration is key to understanding visual processing.

Purpose of the Study:

To demonstrate a novel visual effect: an orbiting ray pattern creating a gray disk.
To explore the implications of this effect for visual temporal integration.

Main Methods:

Presentation of a dynamic visual stimulus (orbiting ray pattern).
Observation and documentation of the resulting visual percept (gray disk).
Analysis of the phenomenon in the context of temporal integration models.

Main Results:

An unexpected gray disk percept was consistently produced by the orbiting ray pattern.
The effect appears to be dependent on the temporal dynamics of the visual stimulus.

Conclusions:

The observed gray disk phenomenon provides a new paradigm for studying visual temporal integration.
This research deepens our understanding of how the visual system integrates information over time.