Type

Journal Article

Authors

Shawn Marshall
Michael Cusimano
Susan Brien
Michael D. Gilchrist
T Blaine Hoshizaki
Andrew Post

Subjects

Psychology

Topics
mortality computational models humans clinical environmental management dynamic response traumatic brain injury population

The dynamic response characteristics of traumatic brain injury. (2014)

Abstract Traumatic brain injury (TBI) continues to be a leading cause of morbidity and mortality throughout the world. Research has been undertaken in order to better understand the characteristics of the injury event and measure the risk of injury to develop more effective environmental, technological, and clinical management strategies. This research used methods that have limited applications to predicting human responses. This limits the current understanding of the mechanisms of TBI in humans. As a result, the purpose of this research was to examine the characteristics of impact and dynamic response that leads to a high risk of sustaining a TBI in a human population. Twenty TBI events collected from hospital reports and eyewitness accounts were reconstructed in the laboratory using a combination of computational mechanics models and Hybrid III anthropometric dummy systems. All cases were falls, with an average impact velocity of approximately 4.0m/s onto hard impact surfaces. The results of the methodology were consistent with current TBI research, describing TBI to occur in the range of 335-445g linear accelerations and 23.7-51.2krad/s(2) angular accelerations. More significantly, this research demonstrated that lower responses in the antero-posterior direction can cause TBI, with lateral impact responses requiring larger magnitudes for the same types of brain lesions. This suggests an increased likelihood of sustaining TBI for impacts to the front or back of the head, a result that has implications affecting current understanding of the mechanisms of TBI and associated threshold parameters.
Collections Ireland -> University College Dublin -> PubMed

Full list of authors on original publication

Shawn Marshall, Michael Cusimano, Susan Brien, Michael D. Gilchrist, T Blaine Hoshizaki, Andrew Post

Experts in our system

1
Shawn Marshall
University College Dublin
Total Publications: 5
 
2
Michael D Cusimano
University College Dublin
Total Publications: 6
 
3
Susan Brien
University College Dublin
Total Publications: 5
 
4
M. D. Gilchrist
University College Dublin
Total Publications: 172
 
5
Thomas Blaine Hoshizaki
University College Dublin
Total Publications: 31
 
6
Andrew Post
University College Dublin
Total Publications: 29