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

Perceptual bistability with counterphase gratings.

A Gorea, J Lorenceau

    Vision Research
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Suprathreshold gratings can be perceived as either drifting or flickering. This study reveals that drift perception peaks at specific spatio-temporal frequencies, suggesting a competition between motion detector levels.

    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

    [Functional assessment of maculopathies and diabetic retinopathy by chromatic multifocal pupillometry].

    Journal francais d'ophtalmologie·2026
    Same author

    [Assessment of a pupillometric method for the screening of glaucoma].

    Journal francais d'ophtalmologie·2023
    Same author

    Perception-action dissociations depend on the luminance contrast of the stimuli.

    Journal of neurophysiology·2013
    Same author

    Influence of near threshold visual distractors on perceptual detection and reaching movements.

    Journal of neurophysiology·2010
    Same author

    Shape and motion interactions at perceptual and attentional levels during processing of structure from motion stimuli.

    Journal of vision·2009
    Same author

    Pupil dilation does not predict subsequent stability in perceptual rivalry.

    Proceedings of the National Academy of Sciences of the United States of America·2008

    Area of Science:

    • Visual perception
    • Neuroscience
    • Computational vision

    Background:

    • Suprathreshold counterphase modulated gratings can elicit a bistable percept of either drift or flicker.
    • These perceptual alternations offer a potential new method for studying directional selective mechanisms in the visual system.

    Purpose of the Study:

    • To investigate the prevalence of drift versus flicker perception.
    • To analyze how spatio-temporal stimulus characteristics influence these perceptions.
    • To compare these findings with threshold measurements and motion/counterphase sensitivity ratios.

    Main Methods:

    • Studied the prevalence of drift and flicker perceptions.
    • Varied spatio-temporal characteristics of counterphase modulated gratings.
    • Compared perceptual data with spatio-temporal contrast sensitivity and motion/counterphase sensitivity ratios.

    Related Experiment Videos

    Main Results:

    • Drift perception is maximized with 8 c/deg spatial and 12 Hz temporal frequencies.
    • Below 1 c/deg or 2 Hz, only flicker perception occurs.
    • Perceptual outcomes are independent of involuntary eye movements.
    • Findings do not support explanations based on transient-sustained pathways or simple equivalency between threshold and suprathreshold mechanisms.

    Conclusions:

    • The balance between flicker and motion perception results from a competition between different levels of motion detectors.
    • Directional selective mechanisms at suprathreshold levels may not directly equate to those at threshold.
    • The study provides insights into the complex processing of visual motion information.