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    Mechanistic Insights into Human Brain Impact Dynamics through Modal Analysis

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    Name:
    PhysRevLett.120.138101.pdf
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    1.274Mb
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    Description:
    Final Published Version
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    Author
    Laksari, Kaveh
    Kurt, Mehmet
    Babaee, Hessam
    Kleiven, Svein
    Camarillo, David
    Affiliation
    Univ Arizona, Dept Bioemed Engn
    Issue Date
    2018-03-30
    
    Metadata
    Show full item record
    Publisher
    AMER PHYSICAL SOC
    Citation
    Laksari, K., Kurt, M., Babaee, H., Kleiven, S., & Camarillo, D. (2018). Mechanistic Insights into Human Brain Impact Dynamics through Modal Analysis. Physical review letters, 120(13), 138101.
    Journal
    PHYSICAL REVIEW LETTERS
    Rights
    © 2018 American Physical Society.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Although concussion is one of the greatest health challenges today, our physical understanding of the cause of injury is limited. In this Letter, we simulated football head impacts in a finite element model and extracted the most dominant modal behavior of the brain's deformation. We showed that the brain's deformation is most sensitive in low frequency regimes close to 30 Hz, and discovered that for most subconcussive head impacts, the dynamics of brain deformation is dominated by a single global mode. In this Letter, we show the existence of localized modes and multimodal behavior in the brain as a hyperviscoelastic medium. This dynamical phenomenon leads to strain concentration patterns, particularly in deep brain regions, which is consistent with reported concussion pathology.
    ISSN
    0031-9007
    1079-7114
    DOI
    10.1103/PhysRevLett.120.138101
    Version
    Final published version
    Sponsors
    Child Health Research Institute through the Thrasher Early Career Award; Lucile Packard Foundation for Children's Health through the Thrasher Early Career Award; Stanford CTSA through the Thrasher Early Career Award [UL1 TR001085]; Thrasher Research Foundation through the Thrasher Early Career Award; National Institutes of Health (NIH) National Institute of Bio-medical Imaging and Bioengineering (NIBIB) [3R21EB01761101S1]
    Additional Links
    https://link.aps.org/doi/10.1103/PhysRevLett.120.138101
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.120.138101
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