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 Experiment Videos

Visual illusions based on single-field contrast asynchronies.

Arthur G Shapiro1, Justin P Charles, Mallory Shear-Heyman

  • 1Department of Psychology, Bucknell University, Pennsylvania 17837, USA. shapiro@bucknell.edu

Journal of Vision
|January 31, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Relationships among lightness illusions uncovered by analyses of individual differences.

Journal of vision·2025
Same author

Separation of luminance and contrast modulation in steady-state visual evoked potentials.

Vision research·2025
Same author

(Mis)estimation of the modal number of desired sexual partners.

PloS one·2024
Same author

The Perpetual Diamond: Contrast Reversals Along Thin Edges Create the Appearance of Motion in Objects.

i-Perception·2022
Same author

Using a variant of the optomotor response as a visual defect detection assay in zebrafish.

Journal of biological methods·2021
Same author

Helix rotation: luminance contrast controls the shift from two-dimensional to three-dimensional perception.

Journal of the Optical Society of America. A, Optics, image science, and vision·2020
Same journal

Analysis of human visual experience data.

Journal of vision·2026
Same journal

Pyramid-based Bayesian modeling for high-resolution behavioral analysis.

Journal of vision·2026
Same journal

Sensation without perception: The white whale effect and perceptual blindness in autonomous vehicles.

Journal of vision·2026
Same journal

Gaze behavior during closed-captioned movie viewing adapts to absent audio through more frequent switching between text and scene.

Journal of vision·2026
Same journal

In pursuit of saccade awareness: Limited volitional control and minimal conscious access to catch-up saccades during smooth pursuit eye movements.

Journal of vision·2026
Same journal

Dissociable effects of element-lifetime and stimulus-duration on local and global motion processing: An equivalent noise study.

Journal of vision·2026
See all related articles

Single-field contrast asynchrony creates visual illusions like shading and shifting. These effects depend on stimulus properties, revealing insights into visual processing mechanisms.

Area of Science:

  • Visual perception
  • Computational neuroscience
  • Psychophysics

Background:

  • Single-field contrast asynchrony involves a single modulated field with multiple contrast information sources at different temporal phases or frequencies.
  • This phenomenon can generate various visual illusions, impacting our understanding of visual processing.

Purpose of the Study:

  • To investigate how single-field contrast asynchronies produce visual illusions.
  • To analyze the "window shade/rocking disk" configuration and its perceptual outcomes (shading and shifting).
  • To quantify the influence of modulation amplitude, surround thickness, temporal frequency, and disk size on these illusions.

Main Methods:

  • Experimental manipulation of a "window shade/rocking disk" stimulus.
  • Measurement of perceived shading and shifting effects across varying stimulus parameters.

Related Experiment Videos

  • Theoretical modeling to explain observed perceptual phenomena.

    • Main Results:

    • Thick surrounds induce a "shading" illusion (spatial inhomogeneity) in the disk.
    • Thin surrounds induce a "shifting" illusion (apparent motion) in the disk.
    • Shading is explained by first- and second-order visual responses or multi-scale filtering; shifting is explained by motion detection mechanisms.

    Conclusions:

    • Single-field contrast asynchrony is a potent source of visual illusions.
    • The type of illusion (shading vs. shifting) depends critically on stimulus configuration, particularly surround thickness.
    • Observed effects provide evidence for distinct visual processing pathways for form and motion, including higher-order motion perception.