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

Shared pathways for rod and cone vision.

M D'Zmura, P Lennie

    Vision Research
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    This study measured rod and cone system contrast sensitivity in dim light. Rods saturate at higher light levels, while cones provide better detail, suggesting separate visual pathways for different spatial frequencies.

    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

    Transmission of spatial information in S-cone pathways.

    Visual neuroscience·2002
    Same author

    Information conveyed by onset transients in responses of striate cortical neurons.

    The Journal of neuroscience : the official journal of the Society for Neuroscience·2001
    Same author

    Importance of color in the segmentation of variegated surfaces.

    Journal of the Optical Society of America. A, Optics, image science, and vision·2001
    Same author

    Reply to letter to editor by M.J. Sankeralli and K.T. Mullen published in Vision Research, 41, 53-55: Lights and neural responses do not depend on choice of color space.

    Vision research·2001
    Same author

    Packing arrangement of the three cone classes in primate retina.

    Vision research·2001
    Same author

    Color appearance of surfaces viewed through fog.

    Perception·2001

    Area of Science:

    • Visual neuroscience
    • Photoreceptor physiology
    • Sensory systems

    Background:

    • Understanding the distinct roles of rod and cone photoreceptors in vision is crucial.
    • The mesopic range of illumination presents unique challenges for visual perception, involving both rod and cone system contributions.

    Purpose of the Study:

    • To quantify the spatial contrast sensitivities of isolated rod and cone systems within the mesopic visual range.
    • To investigate the functional separation and integration of rod and cone visual pathways.

    Main Methods:

    • Utilized heterochromatic gratings presented to the temporal retina at a 10-degree eccentricity.
    • Measured spatial contrast sensitivity across varying illumination levels in the mesopic range.
    • Employed contrast adaptation paradigms to probe pathway specificity.

    Related Experiment Videos

    Main Results:

    • Rod system contrast sensitivity peaked at 20 scotometric trolands (td) with an acuity of 6 cycles per degree (c/deg), then saturated.
    • Cone system sensitivity was generally lower than rods in the mesopic range but offered higher acuity (up to 15 c/deg).
    • Adaptation to rod or cone-specific stimuli affected thresholds for both systems, indicating shared and separate pathways.

    Conclusions:

    • Rod and cone signals share common pathways for low spatial frequency detection.
    • High spatial frequency detection relies exclusively on cone-driven visual pathways.
    • This demonstrates a functional segregation of visual information processing based on spatial frequency and illumination levels.