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

Spatial phase or luminance profile discrimination?

D R Badcock

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

    Human observers can detect subtle phase differences in compound gratings after practice. However, they may rely on local contrast changes rather than directly processing relative phase information for discrimination.

    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

    Foveal contrast processing of increment and decrement targets is equivalently reduced in glaucoma.

    The British journal of ophthalmology·2008
    Same author

    Motion perception in migraineurs: abnormalities are not related to attention.

    Cephalalgia : an international journal of headache·2006
    Same author

    Do migraineurs have difficulty judging direction of simulated heading?

    Cephalalgia : an international journal of headache·2006
    Same author

    Motion processing deficits in migraine.

    Cephalalgia : an international journal of headache·2004
    Same author

    An analysis of the factors associated with visual field deficits measured with flickering stimuli in-between migraine.

    Cephalalgia : an international journal of headache·2004
    Same author

    Independent first- and second-order motion energy analyses of optic flow.

    Psychological research·2001
    Same journal

    Editorial for VSI Amblyopia: Advances in Amblyopia Research.

    Vision research·2026
    Same journal

    Computational and mathematical models in vision: Quantitative approaches to understanding visual perception.

    Vision research·2026
    Same journal

    Complex interactions between lightness, chroma, and hue in color ensemble perception.

    Vision research·2026
    Same journal

    Driving with autism spectrum disorder: Exploring the impact of tactile hazard warnings on gaze behavior and hazard responses.

    Vision research·2026
    Same journal

    Early visual processing in adults with ADHD: evidence from contrast sensitivity, spatial integration, and external noise.

    Vision research·2026
    Same journal

    Pupil reflexes generate the peripheral drift illusion due to ON/OFF motion responses.

    Vision research·2026
    See all related articles

    Area of Science:

    • Visual perception
    • Psychophysics
    • Computational neuroscience

    Background:

    • Human visual system's ability to perceive complex visual stimuli.
    • Investigating the role of phase information in visual processing.
    • Understanding the mechanisms of grating discrimination.

    Purpose of the Study:

    • To investigate human observers' ability to discriminate relative phase differences in compound gratings.
    • To explore the underlying perceptual mechanisms for phase discrimination.
    • To determine if relative phase is directly coded or indirectly inferred.

    Main Methods:

    • Presenting high-contrast compound gratings with varying relative phase angles.
    • Training human observers to discriminate small phase differences.

    Related Experiment Videos

  • Analyzing observer performance and response strategies.

    • Main Results:

    • Reliable detection of phase differences less than 10 degrees with sufficient practice.
    • Evidence suggesting observers may not directly code relative phase.
    • Alternative explanation: discrimination based on local contrast variations.

    Conclusions:

    • Human observers demonstrate high sensitivity to phase differences in gratings.
    • The perceptual strategy for phase discrimination might involve detecting local contrast changes.
    • Further research needed to fully elucidate the neural coding of phase information.