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

6.7K
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...
6.7K
Color Vision01:24

Color Vision

544
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
544

You might also read

Related Articles

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

Sort by
Same author

A retinotopic wiring principle of the human brain.

bioRxiv : the preprint server for biology·2026
Same author

Visual field inhomogeneities and the architectonics of early visual cortex shape visual working memory.

Cerebral cortex (New York, N.Y. : 1991)·2026
Same author

Insights into perceptual learning.

eLife·2026
Same author

Transcranial magnetic stimulation to frontal cortex, unlike occipital stimulation, does not disrupt exogenous attention.

bioRxiv : the preprint server for biology·2026
Same author

SSD: Targeting inflammasome and oxidative stress as a therapeutic strategy in inflammatory diseases.

Biochimica et biophysica acta. General subjects·2026
Same author

Distinct system-level computations underlie perceptual variation across the visual field.

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

Related Experiment Video

Updated: Jun 15, 2025

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

7.0K

Presaccadic Attention Enhances and Reshapes the Contrast Sensitivity Function Differentially around the Visual Field.

Yuna Kwak1, Yukai Zhao2, Zhong-Lin Lu3,2,4,5

  • 1Department of Psychology, New York University, New York, New York 10003 yuna.kwak@nyu.edu marisa.carrasco@nyu.edu.

Eneuro
|August 28, 2024
PubMed
Summary
This summary is machine-generated.

Presaccadic attention enhances contrast sensitivity (CS) across spatial frequencies by increasing visibility at saccade targets. This enhancement is more pronounced along the horizontal meridian, exacerbating existing visual field asymmetries.

Keywords:
contrast sensitivitycontrast sensitivity functionperceptual asymmetriespolar anglepresaccadic attentionsaccade

More Related Videos

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

9.9K
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

306

Related Experiment Videos

Last Updated: Jun 15, 2025

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

7.0K
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

9.9K
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

306

Area of Science:

  • Vision science
  • Neuroscience
  • Perception

Background:

  • Human vision is limited by contrast sensitivity (CS), which varies across the visual field and spatial frequencies (SF).
  • Presaccadic attention, a shift in attention before a saccade, is known to enhance perception at the saccade target.
  • The specific effects of presaccadic attention on the contrast sensitivity function (CSF) and its meridional variations remain unclear.

Purpose of the Study:

  • To investigate how presaccadic attention modulates the relationship between contrast sensitivity and spatial frequency.
  • To determine if presaccadic attention affects the contrast sensitivity function (CSF) uniformly across different visual field meridians.
  • To characterize the changes in key attributes of the CSF induced by presaccadic attention.

Main Methods:

  • Human observers performed tasks involving saccades to targets in different visual field locations.
  • Key attributes of the contrast sensitivity function (CSF) were extracted before and during presaccadic attention.
  • Analysis focused on changes in CS across SF, preferred SF, highest discernible SF, and bandwidth.

Main Results:

  • Presaccadic attention significantly increased CS across all SFs.
  • It also elevated the most preferred and highest discernible SFs.
  • The bandwidth of the CSF was narrowed by presaccadic attention.
  • CS enhancement was greater along the horizontal meridian than the vertical meridian, increasing polar angle asymmetries.

Conclusions:

  • Presaccadic attention improves visual input at saccade targets by enhancing CS across SFs and increasing the range of visible SFs.
  • The differential enhancement between meridians suggests that presaccadic attention can exacerbate existing visual field anisotropies.
  • Further research is needed to explore the neural mechanisms underlying these direction-dependent perceptual changes.