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Related Concept Videos

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.
Anatomy of the Eyeball01:20

Anatomy 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,...
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...
Perceptual Constancy01:12

Perceptual Constancy

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.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
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...
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.

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Related Experiment Video

Updated: Jul 14, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

[Pictorial depth perception in central and peripheral visual fields].

Aya Shirama1, Toshiko Mochizuki

  • 1Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan. shirama@jcom.home.ne.jp

Shinrigaku Kenkyu : the Japanese Journal of Psychology
|May 22, 2007
PubMed
Summary

Depth perception using pictorial cues in peripheral vision is possible with cortically magnified stimuli. Increasing visual attributes in stimuli made discrimination harder in the periphery, suggesting further study is needed.

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Last Updated: Jul 14, 2026

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Area of Science:

  • Visual perception
  • Neuroscience
  • Psychophysics

Context:

  • Peripheral vision exhibits reduced sensitivity compared to central vision.
  • Pictorial depth cues are crucial for understanding 3D space.
  • Cortical Magnification Scale adjusts stimuli size for retinal eccentricity.

Purpose:

  • To investigate if compensating for peripheral visual sensitivity loss enhances depth perception from pictorial cues.
  • To determine the effect of stimulus complexity on peripheral depth discrimination.

Summary:

  • Depth perception from pictorial cues was tested using stimuli at varying retinal eccentricities (2.5-10 degrees).
  • Stimuli were presented at natural or cortically magnified sizes.
  • Experiment 1 showed successful depth discrimination with magnified stimuli within 10 degrees eccentricity, even with multiple visual attributes.
  • Experiment 2 indicated that increased visual attributes in stimuli impaired peripheral depth discrimination.

Impact:

  • Cortically magnified stimuli can facilitate pictorial depth perception in the peripheral visual field.
  • Visual acuity may not solely explain differences in central versus peripheral depth perception.
  • Findings contribute to understanding visual processing limitations and potential compensations in the periphery.