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

Visual acuity functions and pattern discrimination in the destriate cat.

J M Sprague, M A Berkley, H C Hughes

    Acta Neurobiologiae Experimentalis
    |January 1, 1979
    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

    Global versus local processing in the absence of low spatial frequencies.

    Journal of cognitive neuroscience·2013
    Same author

    Global precedence, spatial frequency channels, and the statistics of natural images.

    Journal of cognitive neuroscience·2013
    Same author

    Microbiological diagnosis of prosthetic joint infections: a prospective evaluation of four bacterial culture media in the routine laboratory.

    Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases·2011
    Same author

    The distributions of axons from the motor cell groups in the spinal cord of the fetal sheep.

    The Journal of comparative neurology·2010
    Same author

    Derivatives of 2-amino-4-methylthiazole.

    Journal of the American Chemical Society·2010
    Same author

    Disability evaluation.

    Northwest medicine·2010
    Same journal

    Chronic pantoprazole exposure induces behavioral deficits and region‑specific molecular changes in the rat motor cortex and cerebellum.

    Acta neurobiologiae experimentalis·2026
    Same journal

    Modulation of electrically evoked hippocampal epileptiform activity by exogenous orexins in the rat CA1 field.

    Acta neurobiologiae experimentalis·2026
    Same journal

    The effect of clozapine and GABA<sub>A</sub> receptor drugs on scopolamine‑induced amnesia in male mice.

    Acta neurobiologiae experimentalis·2026
    Same journal

    <i>LRRK2</i> mutations: at the crossroads of dopamine, iron, and calcium imbalance in Parkinson's disease.

    Acta neurobiologiae experimentalis·2026
    Same journal

    Effects of transcranial direct current stimulation in multiple sclerosis: Recent findings of clinical studies and animal models.

    Acta neurobiologiae experimentalis·2026
    Same journal

    Microglia up‑regulate thromboxane A2 synthesis genes in response to C6 glioma‑conditioned medium.

    Acta neurobiologiae experimentalis·2026
    See all related articles

    Cats can still process visual details after removing visual cortex areas 17 and 18. This demonstrates that pattern recognition and form perception rely on brain areas beyond the primary visual cortex.

    Area of Science:

    • Neuroscience
    • Visual Processing
    • Animal Models

    Background:

    • The primary visual cortex, including areas 17 and 18, is traditionally considered crucial for visual processing.
    • Understanding the role of these areas versus extrastriate cortex is vital for comprehending visual perception.

    Purpose of the Study:

    • To investigate the capacity of cats to process visual information after surgical removal of visual cortex areas 17 and 18.
    • To determine if complex spatial stimuli discrimination relies on these specific cortical areas or other visual pathways.

    Main Methods:

    • Lesion studies involving the removal of visual cortex areas 17 and 18 in cats.
    • Behavioral testing to assess visual discrimination abilities, including grating acuity, orientation acuity, vernier offset tasks, and perceptual grouping.

    Related Experiment Videos

  • Analysis of visual cues used in discrimination, such as luminance and local flux.

    • Main Results:

    • Cats with extensive lesions in areas 17 and 18 showed preserved ability to discriminate complex spatial stimuli.
    • Deficits were observed in tasks requiring fine detail detection, such as grating acuity and vernier offset.
    • Perceptual grouping into rows remained largely unaffected, suggesting these mechanisms operate outside the lesioned areas.

    Conclusions:

    • Visual cortex areas 17 and 18 are important for high-spatial frequency analysis and fine detail detection.
    • These areas are not essential for basic pattern and form recognition or perceptual grouping.
    • Neural mechanisms for initial form perception and figure-ground organization lie outside of areas 17 and 18.