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Related Concept Videos

Visual System01:26

Visual System

2.3K
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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Vision01:24

Vision

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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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Related Experiment Video

Updated: May 1, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

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[Visual attention and its control mechanisms].

Hirokazu Ogawa1

  • 1Department of Psychological Science, School of Humanities, Kwansei Gakuin University.

Brain and Nerve = Shinkei Kenkyu No Shinpo
|April 22, 2014
PubMed
Summary
This summary is machine-generated.

Visual attention, a key brain mechanism, involves multiple components that select information from complex scenes. This review examines how these attentional components interact, guided by stimuli salience and volition.

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Area of Science:

  • Cognitive neuroscience
  • Experimental psychology

Context:

  • The brain's limited capacity to process vast visual information necessitates selective mechanisms.
  • Visual attention is a critical area of research, studied for over 25 years.

Purpose:

  • To review the components of attentional guidance.
  • To examine the interactions between these attentional components.
  • To emphasize psychophysical studies in understanding visual attention.

Summary:

  • Visual attention is not monolithic but comprises multiple subcomponents.
  • Attention can be directed towards spatial locations, features, or objects.
  • Attentional guidance is influenced by stimulus salience and voluntary control.

Impact:

  • Provides a comprehensive overview of visual attention mechanisms.
  • Highlights the interplay between different facets of attention.
  • Informs future research directions in cognitive neuroscience and psychology.