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 the parietal lobes direct covert attention?

M I Posner, J A Walker, F A Friedrich

    Neuropsychologia
    |January 1, 1987
    PubMed
    Summary

    Patients with unilateral parietal damage struggle with visual attention deficits. Studies suggest these deficits are better explained by a directional model than a representational one.

    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

    The Brainard District Medical Society.

    The Chicago medical journal and examiner·2023
    Same author

    Caecal volvulus on a background of recurrent caecocolic torsion.

    Annals of the Royal College of Surgeons of England·2021
    Same author

    Intra-articular implantation of collagen scaffold carriers is safe in both native and arthrofibrotic rabbit knee joints.

    Bone & joint research·2017
    Same author

    A Simple ab Initio Model for the Solvated Electron in Methanol.

    The journal of physical chemistry. A·2016
    Same author

    Isotope Dependence and Quantum Effects on Atomic Hydrogen Diffusion in Liquid Water.

    The journal of physical chemistry. B·2015
    Same author

    Bidirectional reflection effects in practical integrating spheres.

    Applied optics·2015

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Visual Attention

    Background:

    • Unilateral parietal damage causes deficits in visual processing, particularly in the visual hemifield opposite the lesion (contralesional).
    • These patients exhibit difficulties when attention is cued ipsilesionally (same side as lesion) and targets appear contralesionally.
    • Existing findings can be explained by either representational or directional models of attention.

    Purpose of the Study:

    • To differentiate between representational and directional models of visual attention deficits following parietal damage.
    • To investigate the spatial dynamics of attention in patients with unilateral parietal lesions.

    Main Methods:

    • Two experiments were conducted involving patients with unilateral parietal damage.
    • Experiment 1 assessed performance with targets presented in ipsilesional versus contralesional visual fields after attending to cued locations.
    • Experiment 2 was designed to specifically discriminate between representational and directional accounts.

    Main Results:

    • Patients performed worse when targets were presented in the contralesional hemifield compared to the ipsilesional hemifield, regardless of cue location.
    • Results from the second experiment provided evidence favoring one model over the other.

    Conclusions:

    • The findings suggest that visual attention deficits in unilateral parietal damage are better described by a directional model.
    • This directional view may offer a more parsimonious explanation for the observed spatial attention impairments.

    Related Experiment Videos