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Related Experiment Video

Updated: Jun 5, 2026

Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Adaptable mechanisms sensitive to surface color in human vision.

Erin Goddard¹, Samuel Solomon, Colin Clifford

¹School of Psychology, The University of Sydney, Sydney, NSW, Australia. erin.goddard@sydney.edu.au

Journal of Vision

|December 29, 2010

Summary

This study investigated color constancy, our ability to perceive surface colors under varying light. Results show adaptable mechanisms, likely in early visual cortex, are crucial for this visual perception.

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Area of Science:

Visual perception
Color science
Neuroscience

Background:

Color constancy enables stable color perception despite illumination changes.
Mechanisms range from retinal adaptation to cognitive factors.
Previous research suggests multiple levels of processing contribute to color constancy.

Purpose of the Study:

To investigate adaptable representations of surface color using psychophysical adaptation.
To differentiate contributions of low-level vs. higher-level mechanisms in color constancy.
To identify the neural locus of adaptable surface color representations.

Main Methods:

Used psychophysical adaptation paradigms with carefully controlled stimuli.
Stimuli were matched for cone contrast but differed in perceived scene stability under changing illumination.
Measured color opponent aftereffects to infer adaptation of underlying mechanisms.

Main Results:

A greater color opponent aftereffect was observed when adapting to a constant scene under changing illumination compared to a changing scene.
This effect persisted even when stimuli were matched for initial receptor responses.
The findings suggest adaptation beyond basic photoreceptor and early neural responses.

Conclusions:

The results support the existence of adaptable mechanisms specifically processing surface color information.
These mechanisms are likely located in early visual cortex, contributing significantly to color constancy.
This provides evidence for higher-level processing influencing visual perception of color.