Mechanistic Insights into Human Brain Impact Dynamics through Modal Analysis

Kaveh Laksari, Mehmet Kurt, Hessam Babaee, Svein Kleiven, David Camarillo

Research output: Contribution to journalArticle

8 Scopus citations

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.

Original languageEnglish (US)
Article number138101
JournalPhysical review letters
Volume120
Issue number13
DOIs
Publication statusPublished - Mar 30 2018

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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