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Related Concept Videos

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.
Muscles of the Eye01:20

Muscles of the Eye

The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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,...
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.
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...

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Related Experiment Video

Updated: Jun 28, 2026

Eye Movement Monitoring of Memory
08:06

Eye Movement Monitoring of Memory

Published on: August 16, 2010

Eye movements and scene perception.

K Rayner1, A Pollatsek

  • 1Department of Psychology, University of Massachusetts, Amherst 01003.

Canadian Journal of Psychology
|September 1, 1992
PubMed
Summary
This summary is machine-generated.

This review explores how eye movements guide scene perception, detailing visual span, saccades, and context integration. It proposes a preliminary model for eye movement control during scene viewing.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Vision Science

Background:

  • Eye movements are crucial for visual information acquisition.
  • Scene perception involves complex processing of visual input.
  • Understanding the interplay between eye movements and perception is key.

Purpose of the Study:

  • To review current research on eye movements and scene perception.
  • To discuss key aspects including visual span, saccades, and context.
  • To propose a preliminary model of eye movement control in scene perception.

Main Methods:

  • Literature review of studies on eye movements and scene perception.
  • Analysis of the role of saccades and visual span.
  • Consideration of object identification and scene context.

Main Results:

  • Effective vision during scene perception is limited.
  • Eye movements are integral to, not just a consequence of, scene perception.
  • Information is integrated across saccades, influenced by scene context.

Conclusions:

  • Eye movement control during scene perception is a complex process.
  • A preliminary model is presented, highlighting key control mechanisms.
  • Future research directions are suggested for a deeper understanding.