Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Anatomy of the Eyeball01:20

Anatomy of the Eyeball

7.2K
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...
7.2K
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

2.9K
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...
2.9K
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

735
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.
735
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.1K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.1K
Vision01:24

Vision

53.6K
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.
53.6K
Visual Agnosia01:12

Visual Agnosia

241
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
241

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dosage compensation and meiotic sex chromosome inactivation are maintained under relaxed selection.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Seeing the World Through a Dark Lens: The Dark Core of Personality and Its Relation to Primal World Beliefs.

Journal of personality·2026
Same author

Life-cycle-related gene expression patterns in the brown algae.

eLife·2025
Same author

Lateral Differences in Cutting Abilities in Team Handball Athletes.

Journal of human kinetics·2025
Same author

Dynamics of X chromosome hyper-expression and inactivation in male tissues during stick insect development.

PLoS genetics·2025
Same author

Stress and Anxiety Among Elite Volleyball Referees While Officiating.

Journal of sports science & medicine·2025

Related Experiment Video

Updated: Jul 23, 2025

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

4.5K

Attentional asymmetries in peripheral vision.

Stefanie Klatt1, Benjamin Noël1, Robin Schrödter1

  • 1Institute of Exercise Science and Sport Informatics, German Sport University Cologne, Cologne, Germany.

British Journal of Psychology (London, England : 1953)
|July 15, 2023
PubMed
Summary

The focus of attention is not a symmetrical ellipse. Visual stimuli presented to the left and top of the fixation point are identified more accurately than those on the right and bottom.

Keywords:
attentional asymmetriesattentional breadthfocus of attention, pseudoneglect

More Related Videos

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
06:25

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

Published on: February 23, 2024

633
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

466

Related Experiment Videos

Last Updated: Jul 23, 2025

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

4.5K
Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
06:25

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

Published on: February 23, 2024

633
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

466

Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Visual perception

Background:

  • Previous research suggested a symmetrical, elliptical focus of attention in peripheral vision.
  • The phenomenon of pseudoneglect indicates asymmetrical attention distribution in the visual field.

Purpose of the Study:

  • To investigate the symmetry of the attentional window in peripheral vision.
  • To determine if the shape and resolution of the attention window are symmetrical.

Main Methods:

  • Participants identified spatially separated stimuli presented in peripheral vision.
  • Stimuli positions were varied relative to the fixation point.

Main Results:

  • Stimulus identification accuracy varied based on position relative to the focus of attention.
  • Stimuli presented to the left and top were identified more accurately than those to the right and bottom.

Conclusions:

  • The attentional window is not symmetrical in shape or resolution.
  • Asymmetrical attention must be considered in future research on the focus of attention.