Accuracy of a wearable sensor for measures of head kinematics and calculation of brain tissue strain
Deutscher übersetzter Titel: | Die Genauigkeit eines tragbaren Sensors für die Messung der Kopfkinematik und die Berechnung der Hirngewebsbelastung |
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Autor: | Knowles, Brooklynn M.; Yu, Henry; Dennison, Christopher R. |
Erschienen in: | Journal of applied biomechanics |
Veröffentlicht: | 33 (2017), 1, S. 2-11, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1065-8483, 1543-2688 |
DOI: | 10.1123/jab.2016-0026 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201704002552 |
Quelle: | BISp |
Abstract des Autors
Wearable kinematic sensors can be used to study head injury biomechanics based on kinematics and, more recently, based on tissue strain metrics using kinematics-driven brain models. These sensors require in-situ calibration and there is currently no data conveying wearable ability to estimate tissue strain. We simulated head impact (n = 871) to a 50th percentile Hybrid III (H-III) head wearing a hockey helmet instrumented with wearable GForceTracker (GFT) sensors measuring linear acceleration and angular velocity. A GFT was also fixed within the H-III head to establish a lower boundary on systematic errors. We quantified GFT errors relative to H-III measures based on peak kinematics and cumulative strain damage measure (CSDM). The smallest mean errors were 12% (peak resultant linear acceleration) and 15% (peak resultant angular velocity) for the GFT within the H-III. Errors for GFTs on the helmet were on average 54% (peak resultant linear acceleration) and 21% (peak resultant angular velocity). On average, the GFT inside the helmet overestimated CSDM by 0.15.