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

Hemispheric asymmetry for a visuo-spatial task in monkeys.

G W Jason, A Cowey, L Weiskrantz

    Neuropsychologia
    |January 1, 1984
    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

    Using action understanding to understand the left inferior parietal cortex in the human brain.

    Brain research·2014
    Same author

    Residual Vision in Multiple Retinal Locations within a Scotoma: Implications for Blindsight.

    Journal of cognitive neuroscience·2013
    Same author

    Does delay impair localisation in blindsight?

    Neuropsychologia·2012
    Same author

    Magnetic stimulation studies of visual cognition.

    Trends in cognitive sciences·2011
    Same author

    Cerebral achromatopsia: colour blindness despite wavelength processing.

    Trends in cognitive sciences·2011
    Same author

    Sir Frederic Bartlett Lectureship.

    British medical journal·2010

    Researchers investigated visuo-spatial ability in rhesus monkeys, finding evidence of hemispheric asymmetry. Monkeys with left-sided brain lesions performed worse on a spatial discrimination task compared to those with right-sided lesions.

    Area of Science:

    • Neuroscience
    • Comparative Psychology
    • Primate Behavior

    Background:

    • Hemispheric specialization, where one brain hemisphere controls functions more than the other, is well-documented in humans.
    • Understanding such asymmetries in non-human primates can provide insights into the evolution of brain function.

    Purpose of the Study:

    • To test for hemispheric asymmetries in visuo-spatial ability in rhesus monkeys.
    • To determine if the right hemisphere plays a specialized role in spatial processing in these primates, analogous to humans.

    Main Methods:

    • A visuo-spatial discrimination task was employed, requiring differentiation between centered and off-center dots.
    • Rhesus monkeys underwent unilateral occipital lobectomy combined with splenial transection (left-sided or right-sided lesions).

    Related Experiment Videos

  • Performance thresholds were measured before and after surgery to calculate changes.

    • Main Results:

    • Monkeys with left-sided lesions showed significantly impaired performance compared to those with right-sided lesions.
    • This difference in impairment indicates a functional asymmetry in visuo-spatial processing.

    Conclusions:

    • The study provides evidence for hemispheric asymmetry in visuo-spatial ability in rhesus monkeys.
    • Findings suggest a specialized role for the left hemisphere in visuo-spatial processing in this species, contrary to human specialization.