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Related Concept Videos

Color Vision01:24

Color 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.
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Vision01:24

Vision

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.
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...

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Related Experiment Video

Updated: May 10, 2026

Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

[Neuroimaging of color and spatial perception].

C M Krick1, M Backens, B Käsmann-Kellner

  • 1Neurozentrum, Klinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum des Saarlandes, 66421, Homburg/Saar, Deutschland. christoph.krick@uniklinikum-saarland.de

Der Radiologe
|June 20, 2013
PubMed
Summary

Spatial orientation and distance perception, like color, rely on the visual system. This study uses functional magnetic resonance imaging (fMRI) to map these visual functions to specific brain regions.

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Related Experiment Videos

Last Updated: May 10, 2026

Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

Revealing Neural Circuit Topography in Multi-Color
09:11

Revealing Neural Circuit Topography in Multi-Color

Published on: November 14, 2011

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking
05:58

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Published on: August 29, 2018

Area of Science:

  • Neuroscience
  • Visual Perception
  • Cognitive Psychology

Context:

  • Visual processing involves multiple specialized brain centers beyond the primary visual cortex.
  • Spatial orientation and distance perception are fundamental visual functions.
  • Understanding the neural basis of these functions is crucial for cognitive neuroscience.

Purpose:

  • To describe investigation methods and designs for mapping visual functions.
  • To assign specific visual processing aspects to specialized centers in the parietal and temporal lobes.
  • To utilize functional magnetic resonance imaging (fMRI) for precise localization.

Summary:

  • This article details how functional magnetic resonance imaging (fMRI) can differentiate the neural substrates of spatial orientation, distance perception, and color vision.
  • It outlines methodologies to link specific visual processing tasks to distinct areas within the parietal and temporal lobes.
  • The research demonstrates a systematic approach to understanding the functional neuroanatomy of the visual system.

Impact:

  • Provides a framework for future research into visual processing disorders.
  • Enhances understanding of how the brain constructs spatial awareness.
  • Contributes to the neuroscientific mapping of higher-level visual functions.