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

How do we discriminate relative spatial phase?

D R Badcock

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

    This study reformulates spatial phase discrimination as a contrast task, finding performance improves with higher contrast. Relative spatial phase perception does not require explicit phase consideration.

    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:

    • Vision science
    • Perceptual psychology
    • Computational neuroscience

    Background:

    • Discriminating the relative spatial phase of sinusoidal stimuli is crucial for visual perception.
    • Previous models often consider phase explicitly, complicating analysis.
    • Understanding how contrast affects phase discrimination is key to visual processing.

    Purpose of the Study:

    • To reformulate spatial phase discrimination as a local contrast discrimination task.
    • To investigate the role of contrast in discriminating compound gratings.
    • To determine if phase information is essential for this discrimination.

    Main Methods:

    • Reformulating spatial phase discrimination as a local contrast discrimination task.
    • Testing performance with gratings of fundamental and harmonic components (2nd, 3rd, 4th).

    Related Experiment Videos

  • Varying component contrast while maintaining constant ratios.

    • Main Results:

    • The reformulated task accurately predicts performance with fundamental and 2nd/4th harmonic gratings.
    • Performance improves significantly as the contrast of compound gratings increases.
    • An exponent derived from the power equation (average 0.54) aligns with contrast increment detection literature.
    • The model effectively predicts the impact of contrast on performance.

    Conclusions:

    • Spatial phase discrimination can be explained by a local contrast discrimination framework.
    • Explicit consideration of spatial phase is unnecessary for explaining performance in these tasks.
    • Contrast level is a critical factor influencing spatial phase discrimination accuracy.