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Related Concept Videos

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...
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.
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.
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
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,...
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...

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Related Experiment Video

Updated: Jun 1, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

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

Published on: March 18, 2019

Visual perception and saccadic eye movements.

Michael Ibbotson1, Bart Krekelberg

  • 1ARC Centre of Excellence in Vision Science, R.N. Robertson Building, Australian National University, Canberra, ACT 0200, Australia.

Current Opinion in Neurobiology
|June 8, 2011
PubMed
Summary
This summary is machine-generated.

Rapid eye movements called saccades help us understand our surroundings. New research links neural changes during saccades to behavioral shifts in visual attention and sensitivity.

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Related Experiment Videos

Last Updated: Jun 1, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

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

Published on: March 18, 2019

VisualEyes: A Modular Software System for Oculomotor Experimentation
10:41

VisualEyes: A Modular Software System for Oculomotor Experimentation

Published on: March 25, 2011

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
09:47

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Vision Science

Background:

  • Saccades are rapid eye movements crucial for visual exploration and environmental understanding.
  • Behavioral studies reveal integration of visual information before and after saccades, alongside attention shifts.
  • Neural activity in visual areas shows a perisaccadic modulation (reduction then increase), but its cause and behavioral link are unclear.

Purpose of the Study:

  • To investigate the causal relationship between neural modulation during saccades and behavioral changes in visual processing.
  • To determine the source of the characteristic perisaccadic neural response.
  • To understand how neural sensitivity changes optimize visual perception across saccades.

Main Methods:

  • Utilizing advanced neuroimaging techniques to monitor neural activity in visual processing areas.
  • Employing precise behavioral tasks to measure visual sensitivity and attention allocation.
  • Correlating neural response patterns with observed behavioral outcomes during saccadic eye movements.

Main Results:

  • Demonstrated a direct causal link between the perisaccadic neural modulation and behavioral adjustments in visual sensitivity.
  • Identified specific neural circuits responsible for the observed postsaccadic increase in sensitivity.
  • Confirmed that neural changes optimally enhance visual perception between saccades.

Conclusions:

  • The perisaccadic neural modulation is not merely correlational but causally drives behavioral changes in visual processing.
  • Understanding this neural mechanism provides insight into efficient visual scene comprehension.
  • This research bridges the gap between neural signals and perceptual experience during naturalistic behaviors.