• Login
    View Item 
    •   Home
    • Doctoral Degree Granting Institutions
    • SUNY College of Optometry
    • SUNY Optometry Masters Thesis Collection
    • View Item
    •   Home
    • Doctoral Degree Granting Institutions
    • SUNY College of Optometry
    • SUNY Optometry Masters Thesis Collection
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of SUNY Open Access RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsDepartmentThis CollectionPublication DateAuthorsTitlesSubjectsDepartmentAuthor ProfilesView

    My Account

    LoginRegister

    Campus Communities in SOAR

    Alfred State CollegeBrockportBroomeCantonDownstateEmpireFashion Institute of TechnologyFredoniaMaritimeNew PaltzOneontaOptometryOswegoPlattsburghSUNY Polytechnic InstituteSUNY PressUpstate Medical

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Critical Flicker Frequency in Traumatic Brain Injury

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    MSThesis_Chang.doc
    Size:
    719Kb
    Format:
    Microsoft Word
    DownloadPDF Variant
    Average rating
     
       votes
    Cast your vote
    You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
    Star rating
     
    Your vote was cast
    Thank you for your feedback
    Author
    Chang, Tina T.
    Keyword
    Traumatic brain injury
    acquired brain injury
    critical flicker fusion frequency
    temporal processing
    magnocellular pathway
    motion sensitivity
    light sensitivity
    Date Published
    2008-05-19
    
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/20.500.12648/1163
    Abstract
    Primary Objective: To determine whether critical flicker frequency (CFF) thresholds are elevated in individuals with traumatic brain injury (TBI) and correlated with the degree of motion and light sensitivity. Methods and procedures: The foveal CFF threshold was assessed in individuals with TBI (n=18) having varying degrees of light and motion sensitivity. Mean CFF values were obtained using the ascending and descending psychophysical method of limits with binocular viewing at 40 cm. A rating-scale questionnaire was used to assess the degree of light sensitivity and motion sensitivity. These parameters were also assessed in a visually-normal cohort. Main outcomes and results: CFF in the TBI group was not significantly different across age groups from the visually- normal cohort. However, mean CFF among the TBI subjects was significantly higher for the “light sensitive” and “motion sensitive” subgroups when compared to the “not light sensitive” and “not motion sensitive” subgroups. The majority of TBI subjects had both light and motion sensitivity. Conclusion: An elevated CFF among a subgroup of TBI subjects may be related to the symptoms of light and motion sensitivity that many TBI patients experience. Underlying mechanisms involving disinhibition of the magnocellular pathway as a result of brain injury may be causal of the hypersensitivity to light and motion. CFF thresholds can potentially aid clinicians in determining methods of treatment for TBI patients.
    Collections
    SUNY Optometry Masters Thesis Collection

    entitlement

     

    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.