Related Experiment Video
Updated: Jul 6, 2026
14:34
How to Create and Use Binocular Rivalry
Published on: November 10, 2010
Binocular rivalry between identical retinal stimuli with an induced color difference
Sang Wook Hong1, Steven K Shevell
1Department of Psychology, Vanderbilt University, Nashville, Tennessee 37203, USA. sang.w.hong@vanderbilt.edu
Visual Neuroscience
|March 7, 2008
Summary
Color rivalry arises from changes in perceived color appearance, not just differing light stimulation. This study shows context-induced color shifts drive rivalry, even with identical physical lights.
Area of Science:
- Vision science
- Neuroscience
- Perception
Background:
- Color rivalry is a phenomenon where perception alternates between two different colors presented to each eye.
- A key debate concerns whether this alternation stems from initial light reception or later neural processing of color appearance.
Purpose of the Study:
- To investigate the underlying mechanisms of color rivalry.
- To determine if color rivalry is driven by differences in photoreceptor stimulation or by neural shifts in color appearance.
Main Methods:
- Used binocular rivalry with physically identical lights that appeared different due to chromatic induction.
- Presented rivalrous gratings dichoptically, with binocular disparity, against patterned surrounds.
- Measured perceptual alternation in hue and perceived stereoscopic depth.
Main Results:
- Found perceptual alternation in hue between physically identical chromaticities.
- Observed stereoscopic depth perception, indicating neural combination occurs during rivalry.
- Demonstrated that color rivalry is resolved after color appearance shifts induced by chromatic context.
Conclusions:
- Color rivalry is resolved after neural shifts in color appearance caused by chromatic context.
- Color rivalry does not necessitate competing unequal cone excitations from the stimuli.
Related Concept Videos
01:24Color Vision
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
01:22Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
01:20Anatomy of the Eyeball
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
01:24Vision
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.