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Related Concept Videos

Color Vision01:24

Color Vision

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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.
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Photoreceptors and Visual Pathways01:22

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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,...
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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.
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Perceptual Constancy01:12

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
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Anatomy of the Eyeball01:20

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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...
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Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
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Visualizing Visual Adaptation
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Colour Vision: Understanding #TheDress.

David H Brainard1, Anya C Hurlbert2

  • 1Department of Psychology, University of Pennsylvania, 3401 Walnut Street, Philadelphia, PA 19104, USA.

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|July 1, 2015
PubMed
Summary
This summary is machine-generated.

Individual differences in dress color perception are significant. These variations may stem from visual mechanisms that stabilize object color perception.

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Area of Science:

  • Visual perception
  • Color science
  • Psychophysics

Background:

  • The perception of object color is generally assumed to be stable under varying illumination conditions.
  • However, a viral internet image of a dress demonstrated striking individual differences in perceived color, challenging this assumption.

Purpose of the Study:

  • To investigate the source of individual variations in color perception for a specific ambiguous visual stimulus.
  • To explore the role of visual mechanisms involved in color constancy in these differences.

Main Methods:

  • Presented multiple variants of the dress image to participants.
  • Collected subjective reports on perceived color and analyzed individual response patterns.

Main Results:

  • Confirmed significant and striking individual differences in the perceived color of the dress.
  • Observed that these differences were consistent across different image variants.

Conclusions:

  • Individual variations in dress color perception are likely linked to the operation of visual mechanisms responsible for color constancy.
  • The study highlights the complex interplay between stimulus properties and individual visual processing in determining color perception.