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

Clinical implications of parallel visual pathways.

C J Bassi1, S Lehmkuhle

  • 1School of Optometry, University of Missouri-St. Louis 63121.

Journal of the American Optometric Association
|February 1, 1990
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

Effect of topical anesthetic use on initial patient satisfaction and overall success with rigid gas permeable contact lenses.

Optometry and vision science : official publication of the American Academy of Optometry·1998
Same author

Visually evoked cortical potentials in awake cats during saccadic eye movements.

Experimental brain research·1998
Same author

Effect of patient personality profile and verbal presentation on successful rigid contact lens adaptation, satisfaction and compliance.

Optometry and vision science : official publication of the American Academy of Optometry·1998
Same author

Transient visual attention is dominated by the magnocellular stream.

Vision research·1997
Same author

Disparity tuning of the stereoscopic (cyclopean) motion aftereffect.

Vision research·1996
Same author

Clinical evaluation of five portable tonometers.

Journal of the American Optometric Association·1995

The visual system uses two main pathways: the M-pathway for fast, coarse visual processing and the P-pathway for slow, detailed visual processing. These pathways are crucial for understanding visual perception and diseases affecting vision.

Area of Science:

  • Neuroscience
  • Visual System Research
  • Comparative Anatomy

Background:

  • The human visual system processes information via parallel pathways from the retina to the visual cortex.
  • Understanding these pathways is key to deciphering visual perception and neurological disorders.

Purpose of the Study:

  • To present anatomical and physiological evidence for two distinct visual pathways in cats, primates, and humans.
  • To differentiate the functional roles of these pathways based on spatial and temporal frequency sensitivity.
  • To explore the implications of pathway dysfunction in neurological diseases.

Main Methods:

  • Anatomical tracing of visual pathways.
  • Physiological recordings in animal models and humans.
  • Behavioral experiments assessing visual perception.

Related Experiment Videos

  • Analysis of patient data with visual deficits.

    • Main Results:

    • Identified two distinct pathways: the M-pathway (Magnocellular) and P-pathway (Parvocellular).
    • M-pathway excels at processing coarse visual form, motion, and fast temporal modulations.
    • P-pathway is specialized for fine spatial detail and slow temporal modulations.
    • Differential sensitivity correlates with human visual phenomena.
    • Certain diseases like glaucoma and Alzheimer's selectively impair M- or P-pathway function.

    Conclusions:

    • The M- and P-pathways exhibit distinct functional properties crucial for visual processing.
    • Dysfunction in these pathways underlies specific visual deficits observed in various neurological conditions.
    • This research provides a framework for understanding visual system disorders.