阿根廷vs墨西哥竞猜
 library logo
    • login
    view item 
    •   knowledge commons home
    • electronic theses and dissertations
    • retrospective theses
    • view item
    •   knowledge commons home
    • electronic theses and dissertations
    • retrospective theses
    • view item
    javascript is disabled for your browser. some features of this site may not work without it.
    quick search

    browse

    all of knowledge commonscommunities & collectionsby issue dateauthorstitlessubjectsdisciplineadvisorcommittee memberthis collectionby issue dateauthorstitlessubjectsdisciplineadvisorcommittee member

    my account

    login

    assessment of magno-, parvo-, and koniocellular visual streams in migraine / by james brazeau.

    thumbnail
    view/open
    brazeauj2008m-1b.pdf (1.468mb)
    date
    2008
    author
    brazeau, james n. r.
    metadata
    show full item record
    abstract
    although visual abnormalities have been noted in migraine, no studies have specifically sought to assess all three visual processing streams. we are the first to psychophysically assess visual functionality of the magnocellular (mc), parvocellular (pc), and koniocellular (kc) parallel streams at different hierarchical visual pathway loci across groups of individuals with migraine with aura (ma; n = 13), migraine without aura (mwo; n = 14), and controls (o = 15). participants completed four tasks: (i) visual field analysis using short-wave length automated perimetry (swap), (2) chromatic discrimination along cone-excitation axes using the cambridge colour test, (3) chromatic contrast sensitivity across isoluminant bichromatic spatial gabor gratings, and (4) luminance contrast sensitivity across heteroluminant spatial gabor gratings. our results suggest that deficits are selective to short-wavelength-sensitive cones and the associated kc visual stream. furthermore, functional inconsistencies and consistencies between our swap and chromatic discrimination measures and swap and chromatic sensitivity measures, respectively, provide evidence for a retinal locus of dysfunction in ma that is compensated for at downstream locations within the kc visual stream.
    uri
    http://knowledgecommons.lakeheadu.ca/handle/2453/3874
    collections
    • retrospective theses [1604]

    阿根廷vs墨西哥竞猜 library
    contact us | send feedback

     

     


    阿根廷vs墨西哥竞猜 library
    contact us | send feedback