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

Intensity-dependent spatial summation.

T N Cornsweet, J I Yellott

    Journal of the Optical Society of America. A, Optics and Image Science
    |October 1, 1985
    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

    Every discrete, finite image is uniquely determined by its dipole histogram.

    Vision research·2000
    Same author

    Photon noise and constant-volume operators.

    Journal of the Optical Society of America. A, Optics and image science·1987
    Same author

    Prentice Award lecture: a simple retinal mechanism that has complex and profound effects on perception.

    American journal of optometry and physiological optics·1985
    Same author

    Reliability of optic disk topographic measurements recorded with a video-ophthalmograph.

    American journal of ophthalmology·1984
    Same author

    Image sampling properties of photoreceptors: a reply to Miller and Bernard.

    Vision research·1984
    Same author

    Spectral consequences of photoreceptor sampling in the rhesus retina.

    Science (New York, N.Y.)·1983
    Same journal

    Phase retrieval with prior information.

    Journal of the Optical Society of America. A, Optics and image science·2008
    Same journal

    Clinical microscopy of the cornea utilizing optical sectioning and a high-numerical-aperture objective.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Eye-tracking laser Doppler velocimeter stabilized in two dimensions: principle, design, and construction.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Effects of aging in retinal image quality.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Axial eye-length measurement by wavelength-shift interferometry.

    Journal of the Optical Society of America. A, Optics and image science·1993
    Same journal

    Fractal analysis of steady-state-flicker visual evoked potentials: feasibility.

    Journal of the Optical Society of America. A, Optics and image science·1993
    See all related articles

    As light intensity increases, the human retina

    Area of Science:

    • Visual perception
    • Retinal image processing

    Background:

    • Human retinal spatial summation area shrinks with increasing illuminance.
    • This adaptation is crucial for detecting spatial contrast under photon noise limitations.

    Purpose of the Study:

    • To analyze an image-processing mechanism explaining retinal adaptations to light.
    • To investigate how varying point-spread function areas impact visual processing.

    Main Methods:

    • Modeling a point-spread function whose area is inversely proportional to illuminance.
    • Analyzing the resulting visual processing characteristics.

    Main Results:

    • The model demonstrates improved spatial resolution at higher illuminance.
    • It replicates center-surround antagonism and bandpass filtering effects.

    Related Experiment Videos

  • The mechanism explains adherence and deviations in Ricco's and Weber's laws.

    • Conclusions:

    • A unified image-processing mechanism explains key retinal functions.
    • This model accounts for spatial summation changes and psychophysical laws.
    • The relationship between this mechanism and lateral inhibition is clarified.