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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.
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,...
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...
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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,...

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Related Experiment Video

Updated: Jun 3, 2026

Using Electroencephalography Measurements and High-quality Video Recording for Analyzing Visual Perception of Media Content
10:41

Using Electroencephalography Measurements and High-quality Video Recording for Analyzing Visual Perception of Media Content

Published on: May 26, 2018

Where does attention go when you blink?

David E Irwin1

  • 1Department of Psychology, University of Illinois, 603 E. Daniel St., Champaign, IL 61820, USA. irwin@illinois.edu

Attention, Perception & Psychophysics
|March 25, 2011
PubMed
Summary
This summary is machine-generated.

Eye blinks involuntarily shift visual attention downward, preceding eye movements. This research shows blinking influences attention allocation, similar to saccades.

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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

Area of Science:

  • Cognitive Neuroscience
  • Visual Attention Research
  • Oculomotor Control

Background:

  • Covert visual attention typically precedes voluntary saccadic eye movements.
  • The relationship between involuntary actions like eye blinks and attention allocation is less understood.
  • Investigating blink-related attentional shifts can reveal new insights into oculomotor control.

Purpose of the Study:

  • To determine if eye blinks affect the allocation of visual attention.
  • To investigate the directionality and involuntary nature of attention shifts during blinks.
  • To compare attention shifts during blinks with those preceding saccades.

Main Methods:

  • Subjects performed a partial-report task under both blink and no-blink conditions.
  • Accuracy and mislocation errors were measured to assess attention allocation.
  • Experiments controlled for potential biases in attentional focus.

Main Results:

  • Blinking significantly improved accuracy and reduced errors for the bottom row of stimuli.
  • Attention was demonstrably allocated downward prior to a blink, even when attention was directed elsewhere.
  • These findings suggest an involuntary downward attention shift associated with blinking.

Conclusions:

  • Eye blinks involuntarily direct visual attention downward.
  • Attention appears to precede blink-induced eye movements, mirroring patterns seen with saccades.
  • This suggests a coordinated mechanism between attention and eye movements during blinks.